mirror of
https://github.com/git/git
synced 2024-08-28 12:09:19 +00:00
![Elijah Newren](/assets/img/avatar_default.png)
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1626 lines
42 KiB
C
1626 lines
42 KiB
C
#include "git-compat-util.h"
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#include "config.h"
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#include "environment.h"
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#include "gettext.h"
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#include "hex.h"
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#include "remote.h"
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#include "connect.h"
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#include "strbuf.h"
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#include "walker.h"
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#include "http.h"
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#include "run-command.h"
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#include "pkt-line.h"
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#include "string-list.h"
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#include "strvec.h"
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#include "credential.h"
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#include "oid-array.h"
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#include "send-pack.h"
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#include "setup.h"
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#include "protocol.h"
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#include "quote.h"
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#include "trace2.h"
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#include "transport.h"
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#include "url.h"
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#include "write-or-die.h"
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static struct remote *remote;
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/* always ends with a trailing slash */
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static struct strbuf url = STRBUF_INIT;
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struct options {
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int verbosity;
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unsigned long depth;
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char *deepen_since;
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struct string_list deepen_not;
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struct string_list push_options;
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char *filter;
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unsigned progress : 1,
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check_self_contained_and_connected : 1,
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cloning : 1,
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update_shallow : 1,
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followtags : 1,
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dry_run : 1,
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thin : 1,
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/* One of the SEND_PACK_PUSH_CERT_* constants. */
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push_cert : 2,
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deepen_relative : 1,
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/* see documentation of corresponding flag in fetch-pack.h */
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from_promisor : 1,
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refetch : 1,
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atomic : 1,
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object_format : 1,
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force_if_includes : 1;
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const struct git_hash_algo *hash_algo;
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};
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static struct options options;
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static struct string_list cas_options = STRING_LIST_INIT_DUP;
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static int set_option(const char *name, const char *value)
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{
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if (!strcmp(name, "verbosity")) {
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char *end;
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int v = strtol(value, &end, 10);
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if (value == end || *end)
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return -1;
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options.verbosity = v;
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return 0;
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}
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else if (!strcmp(name, "progress")) {
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if (!strcmp(value, "true"))
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options.progress = 1;
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else if (!strcmp(value, "false"))
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options.progress = 0;
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else
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return -1;
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return 0;
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}
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else if (!strcmp(name, "depth")) {
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char *end;
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unsigned long v = strtoul(value, &end, 10);
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if (value == end || *end)
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return -1;
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options.depth = v;
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return 0;
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}
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else if (!strcmp(name, "deepen-since")) {
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options.deepen_since = xstrdup(value);
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return 0;
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}
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else if (!strcmp(name, "deepen-not")) {
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string_list_append(&options.deepen_not, value);
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return 0;
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}
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else if (!strcmp(name, "deepen-relative")) {
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if (!strcmp(value, "true"))
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options.deepen_relative = 1;
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else if (!strcmp(value, "false"))
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options.deepen_relative = 0;
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else
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return -1;
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return 0;
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}
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else if (!strcmp(name, "followtags")) {
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if (!strcmp(value, "true"))
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options.followtags = 1;
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else if (!strcmp(value, "false"))
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options.followtags = 0;
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else
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return -1;
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return 0;
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}
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else if (!strcmp(name, "dry-run")) {
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if (!strcmp(value, "true"))
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options.dry_run = 1;
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else if (!strcmp(value, "false"))
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options.dry_run = 0;
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else
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return -1;
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return 0;
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}
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else if (!strcmp(name, "check-connectivity")) {
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if (!strcmp(value, "true"))
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options.check_self_contained_and_connected = 1;
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else if (!strcmp(value, "false"))
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options.check_self_contained_and_connected = 0;
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else
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return -1;
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return 0;
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}
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else if (!strcmp(name, "cas")) {
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struct strbuf val = STRBUF_INIT;
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strbuf_addstr(&val, "--force-with-lease=");
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if (*value != '"')
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strbuf_addstr(&val, value);
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else if (unquote_c_style(&val, value, NULL))
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return -1;
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string_list_append(&cas_options, val.buf);
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strbuf_release(&val);
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return 0;
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} else if (!strcmp(name, TRANS_OPT_FORCE_IF_INCLUDES)) {
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if (!strcmp(value, "true"))
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options.force_if_includes = 1;
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else if (!strcmp(value, "false"))
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options.force_if_includes = 0;
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else
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return -1;
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return 0;
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} else if (!strcmp(name, "cloning")) {
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if (!strcmp(value, "true"))
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options.cloning = 1;
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else if (!strcmp(value, "false"))
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options.cloning = 0;
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else
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return -1;
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return 0;
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} else if (!strcmp(name, "update-shallow")) {
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if (!strcmp(value, "true"))
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options.update_shallow = 1;
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else if (!strcmp(value, "false"))
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options.update_shallow = 0;
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else
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return -1;
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return 0;
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} else if (!strcmp(name, "pushcert")) {
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if (!strcmp(value, "true"))
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options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
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else if (!strcmp(value, "false"))
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options.push_cert = SEND_PACK_PUSH_CERT_NEVER;
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else if (!strcmp(value, "if-asked"))
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options.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
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else
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return -1;
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return 0;
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} else if (!strcmp(name, "atomic")) {
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if (!strcmp(value, "true"))
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options.atomic = 1;
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else if (!strcmp(value, "false"))
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options.atomic = 0;
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else
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return -1;
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return 0;
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} else if (!strcmp(name, "push-option")) {
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if (*value != '"')
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string_list_append(&options.push_options, value);
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else {
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struct strbuf unquoted = STRBUF_INIT;
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if (unquote_c_style(&unquoted, value, NULL) < 0)
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die(_("invalid quoting in push-option value: '%s'"), value);
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string_list_append_nodup(&options.push_options,
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strbuf_detach(&unquoted, NULL));
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}
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return 0;
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} else if (!strcmp(name, "family")) {
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if (!strcmp(value, "ipv4"))
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git_curl_ipresolve = CURL_IPRESOLVE_V4;
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else if (!strcmp(value, "ipv6"))
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git_curl_ipresolve = CURL_IPRESOLVE_V6;
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else if (!strcmp(value, "all"))
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git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
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else
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return -1;
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return 0;
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} else if (!strcmp(name, "from-promisor")) {
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options.from_promisor = 1;
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return 0;
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} else if (!strcmp(name, "refetch")) {
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options.refetch = 1;
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return 0;
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} else if (!strcmp(name, "filter")) {
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options.filter = xstrdup(value);
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return 0;
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} else if (!strcmp(name, "object-format")) {
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int algo;
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options.object_format = 1;
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if (strcmp(value, "true")) {
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algo = hash_algo_by_name(value);
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if (algo == GIT_HASH_UNKNOWN)
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die("unknown object format '%s'", value);
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options.hash_algo = &hash_algos[algo];
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}
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return 0;
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} else {
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return 1 /* unsupported */;
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}
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}
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struct discovery {
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char *service;
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char *buf_alloc;
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char *buf;
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size_t len;
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struct ref *refs;
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struct oid_array shallow;
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enum protocol_version version;
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unsigned proto_git : 1;
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};
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static struct discovery *last_discovery;
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static struct ref *parse_git_refs(struct discovery *heads, int for_push)
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{
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struct ref *list = NULL;
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struct packet_reader reader;
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packet_reader_init(&reader, -1, heads->buf, heads->len,
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PACKET_READ_CHOMP_NEWLINE |
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PACKET_READ_GENTLE_ON_EOF |
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PACKET_READ_DIE_ON_ERR_PACKET);
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heads->version = discover_version(&reader);
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switch (heads->version) {
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case protocol_v2:
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/*
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* Do nothing. This isn't a list of refs but rather a
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* capability advertisement. Client would have run
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* 'stateless-connect' so we'll dump this capability listing
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* and let them request the refs themselves.
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*/
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break;
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case protocol_v1:
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case protocol_v0:
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get_remote_heads(&reader, &list, for_push ? REF_NORMAL : 0,
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NULL, &heads->shallow);
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options.hash_algo = reader.hash_algo;
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break;
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case protocol_unknown_version:
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BUG("unknown protocol version");
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}
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return list;
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}
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static const struct git_hash_algo *detect_hash_algo(struct discovery *heads)
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{
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const char *p = memchr(heads->buf, '\t', heads->len);
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int algo;
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if (!p)
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return the_hash_algo;
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algo = hash_algo_by_length((p - heads->buf) / 2);
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if (algo == GIT_HASH_UNKNOWN)
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return NULL;
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return &hash_algos[algo];
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}
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static struct ref *parse_info_refs(struct discovery *heads)
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{
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char *data, *start, *mid;
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char *ref_name;
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int i = 0;
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struct ref *refs = NULL;
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struct ref *ref = NULL;
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struct ref *last_ref = NULL;
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options.hash_algo = detect_hash_algo(heads);
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if (!options.hash_algo)
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die("%sinfo/refs not valid: could not determine hash algorithm; "
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"is this a git repository?",
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transport_anonymize_url(url.buf));
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data = heads->buf;
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start = NULL;
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mid = data;
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while (i < heads->len) {
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if (!start) {
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start = &data[i];
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}
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if (data[i] == '\t')
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mid = &data[i];
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if (data[i] == '\n') {
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if (mid - start != options.hash_algo->hexsz)
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die(_("%sinfo/refs not valid: is this a git repository?"),
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transport_anonymize_url(url.buf));
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data[i] = 0;
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ref_name = mid + 1;
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ref = alloc_ref(ref_name);
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get_oid_hex_algop(start, &ref->old_oid, options.hash_algo);
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if (!refs)
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refs = ref;
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if (last_ref)
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last_ref->next = ref;
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last_ref = ref;
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start = NULL;
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}
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i++;
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}
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ref = alloc_ref("HEAD");
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if (!http_fetch_ref(url.buf, ref) &&
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!resolve_remote_symref(ref, refs)) {
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ref->next = refs;
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refs = ref;
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} else {
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free(ref);
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}
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return refs;
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}
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static void free_discovery(struct discovery *d)
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{
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if (d) {
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if (d == last_discovery)
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last_discovery = NULL;
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free(d->shallow.oid);
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free(d->buf_alloc);
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free_refs(d->refs);
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free(d->service);
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free(d);
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}
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}
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static int show_http_message(struct strbuf *type, struct strbuf *charset,
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struct strbuf *msg)
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{
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const char *p, *eol;
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/*
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* We only show text/plain parts, as other types are likely
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* to be ugly to look at on the user's terminal.
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*/
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if (strcmp(type->buf, "text/plain"))
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return -1;
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if (charset->len)
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strbuf_reencode(msg, charset->buf, get_log_output_encoding());
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strbuf_trim(msg);
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if (!msg->len)
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return -1;
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p = msg->buf;
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do {
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eol = strchrnul(p, '\n');
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fprintf(stderr, "remote: %.*s\n", (int)(eol - p), p);
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p = eol + 1;
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} while(*eol);
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return 0;
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}
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static int get_protocol_http_header(enum protocol_version version,
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struct strbuf *header)
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{
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if (version > 0) {
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strbuf_addf(header, GIT_PROTOCOL_HEADER ": version=%d",
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version);
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return 1;
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}
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return 0;
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}
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static void check_smart_http(struct discovery *d, const char *service,
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struct strbuf *type)
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{
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const char *p;
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struct packet_reader reader;
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/*
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* If we don't see x-$service-advertisement, then it's not smart-http.
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* But once we do, we commit to it and assume any other protocol
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* violations are hard errors.
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*/
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if (!skip_prefix(type->buf, "application/x-", &p) ||
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!skip_prefix(p, service, &p) ||
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strcmp(p, "-advertisement"))
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return;
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packet_reader_init(&reader, -1, d->buf, d->len,
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PACKET_READ_CHOMP_NEWLINE |
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PACKET_READ_DIE_ON_ERR_PACKET);
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if (packet_reader_read(&reader) != PACKET_READ_NORMAL)
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die(_("invalid server response; expected service, got flush packet"));
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if (skip_prefix(reader.line, "# service=", &p) && !strcmp(p, service)) {
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/*
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* The header can include additional metadata lines, up
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* until a packet flush marker. Ignore these now, but
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* in the future we might start to scan them.
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*/
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for (;;) {
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packet_reader_read(&reader);
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if (reader.pktlen <= 0) {
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break;
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}
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}
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/*
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* v0 smart http; callers expect us to soak up the
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* service and header packets
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*/
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d->buf = reader.src_buffer;
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d->len = reader.src_len;
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d->proto_git = 1;
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} else if (!strcmp(reader.line, "version 2")) {
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/*
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* v2 smart http; do not consume version packet, which will
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* be handled elsewhere.
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*/
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d->proto_git = 1;
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} else {
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die(_("invalid server response; got '%s'"), reader.line);
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}
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}
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static struct discovery *discover_refs(const char *service, int for_push)
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{
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struct strbuf type = STRBUF_INIT;
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struct strbuf charset = STRBUF_INIT;
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struct strbuf buffer = STRBUF_INIT;
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struct strbuf refs_url = STRBUF_INIT;
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struct strbuf effective_url = STRBUF_INIT;
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struct strbuf protocol_header = STRBUF_INIT;
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struct string_list extra_headers = STRING_LIST_INIT_DUP;
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struct discovery *last = last_discovery;
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int http_ret, maybe_smart = 0;
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struct http_get_options http_options;
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enum protocol_version version = get_protocol_version_config();
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if (last && !strcmp(service, last->service))
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return last;
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free_discovery(last);
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strbuf_addf(&refs_url, "%sinfo/refs", url.buf);
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if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) &&
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git_env_bool("GIT_SMART_HTTP", 1)) {
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maybe_smart = 1;
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if (!strchr(url.buf, '?'))
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strbuf_addch(&refs_url, '?');
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else
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strbuf_addch(&refs_url, '&');
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strbuf_addf(&refs_url, "service=%s", service);
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}
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/*
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* NEEDSWORK: If we are trying to use protocol v2 and we are planning
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* to perform any operation that doesn't involve upload-pack (i.e., a
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* fetch, ls-remote, etc), then fallback to v0 since we don't know how
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* to do anything else (like push or remote archive) via v2.
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*/
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if (version == protocol_v2 && strcmp("git-upload-pack", service))
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version = protocol_v0;
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/* Add the extra Git-Protocol header */
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if (get_protocol_http_header(version, &protocol_header))
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string_list_append(&extra_headers, protocol_header.buf);
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memset(&http_options, 0, sizeof(http_options));
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http_options.content_type = &type;
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http_options.charset = &charset;
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http_options.effective_url = &effective_url;
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http_options.base_url = &url;
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http_options.extra_headers = &extra_headers;
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http_options.initial_request = 1;
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http_options.no_cache = 1;
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http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options);
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switch (http_ret) {
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case HTTP_OK:
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break;
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case HTTP_MISSING_TARGET:
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show_http_message(&type, &charset, &buffer);
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die(_("repository '%s' not found"),
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transport_anonymize_url(url.buf));
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case HTTP_NOAUTH:
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show_http_message(&type, &charset, &buffer);
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die(_("Authentication failed for '%s'"),
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transport_anonymize_url(url.buf));
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case HTTP_NOMATCHPUBLICKEY:
|
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show_http_message(&type, &charset, &buffer);
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die(_("unable to access '%s' with http.pinnedPubkey configuration: %s"),
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transport_anonymize_url(url.buf), curl_errorstr);
|
|
default:
|
|
show_http_message(&type, &charset, &buffer);
|
|
die(_("unable to access '%s': %s"),
|
|
transport_anonymize_url(url.buf), curl_errorstr);
|
|
}
|
|
|
|
if (options.verbosity && !starts_with(refs_url.buf, url.buf)) {
|
|
char *u = transport_anonymize_url(url.buf);
|
|
warning(_("redirecting to %s"), u);
|
|
free(u);
|
|
}
|
|
|
|
last= xcalloc(1, sizeof(*last_discovery));
|
|
last->service = xstrdup(service);
|
|
last->buf_alloc = strbuf_detach(&buffer, &last->len);
|
|
last->buf = last->buf_alloc;
|
|
|
|
if (maybe_smart)
|
|
check_smart_http(last, service, &type);
|
|
|
|
if (last->proto_git)
|
|
last->refs = parse_git_refs(last, for_push);
|
|
else
|
|
last->refs = parse_info_refs(last);
|
|
|
|
strbuf_release(&refs_url);
|
|
strbuf_release(&type);
|
|
strbuf_release(&charset);
|
|
strbuf_release(&effective_url);
|
|
strbuf_release(&buffer);
|
|
strbuf_release(&protocol_header);
|
|
string_list_clear(&extra_headers, 0);
|
|
last_discovery = last;
|
|
return last;
|
|
}
|
|
|
|
static struct ref *get_refs(int for_push)
|
|
{
|
|
struct discovery *heads;
|
|
|
|
if (for_push)
|
|
heads = discover_refs("git-receive-pack", for_push);
|
|
else
|
|
heads = discover_refs("git-upload-pack", for_push);
|
|
|
|
return heads->refs;
|
|
}
|
|
|
|
static void output_refs(struct ref *refs)
|
|
{
|
|
struct ref *posn;
|
|
if (options.object_format && options.hash_algo) {
|
|
printf(":object-format %s\n", options.hash_algo->name);
|
|
repo_set_hash_algo(the_repository,
|
|
hash_algo_by_ptr(options.hash_algo));
|
|
}
|
|
for (posn = refs; posn; posn = posn->next) {
|
|
if (posn->symref)
|
|
printf("@%s %s\n", posn->symref, posn->name);
|
|
else
|
|
printf("%s %s\n", hash_to_hex_algop(posn->old_oid.hash,
|
|
options.hash_algo),
|
|
posn->name);
|
|
}
|
|
printf("\n");
|
|
fflush(stdout);
|
|
}
|
|
|
|
struct rpc_state {
|
|
const char *service_name;
|
|
char *service_url;
|
|
char *hdr_content_type;
|
|
char *hdr_accept;
|
|
char *hdr_accept_language;
|
|
char *protocol_header;
|
|
char *buf;
|
|
size_t alloc;
|
|
size_t len;
|
|
size_t pos;
|
|
int in;
|
|
int out;
|
|
int any_written;
|
|
unsigned gzip_request : 1;
|
|
unsigned initial_buffer : 1;
|
|
|
|
/*
|
|
* Whenever a pkt-line is read into buf, append the 4 characters
|
|
* denoting its length before appending the payload.
|
|
*/
|
|
unsigned write_line_lengths : 1;
|
|
|
|
/*
|
|
* Used by rpc_out; initialize to 0. This is true if a flush has been
|
|
* read, but the corresponding line length (if write_line_lengths is
|
|
* true) and EOF have not been sent to libcurl. Since each flush marks
|
|
* the end of a request, each flush must be completely sent before any
|
|
* further reading occurs.
|
|
*/
|
|
unsigned flush_read_but_not_sent : 1;
|
|
};
|
|
|
|
#define RPC_STATE_INIT { 0 }
|
|
|
|
/*
|
|
* Appends the result of reading from rpc->out to the string represented by
|
|
* rpc->buf and rpc->len if there is enough space. Returns 1 if there was
|
|
* enough space, 0 otherwise.
|
|
*
|
|
* If rpc->write_line_lengths is true, appends the line length as a 4-byte
|
|
* hexadecimal string before appending the result described above.
|
|
*
|
|
* Writes the total number of bytes appended into appended.
|
|
*/
|
|
static int rpc_read_from_out(struct rpc_state *rpc, int options,
|
|
size_t *appended,
|
|
enum packet_read_status *status) {
|
|
size_t left;
|
|
char *buf;
|
|
int pktlen_raw;
|
|
|
|
if (rpc->write_line_lengths) {
|
|
left = rpc->alloc - rpc->len - 4;
|
|
buf = rpc->buf + rpc->len + 4;
|
|
} else {
|
|
left = rpc->alloc - rpc->len;
|
|
buf = rpc->buf + rpc->len;
|
|
}
|
|
|
|
if (left < LARGE_PACKET_MAX)
|
|
return 0;
|
|
|
|
*status = packet_read_with_status(rpc->out, NULL, NULL, buf,
|
|
left, &pktlen_raw, options);
|
|
if (*status != PACKET_READ_EOF) {
|
|
*appended = pktlen_raw + (rpc->write_line_lengths ? 4 : 0);
|
|
rpc->len += *appended;
|
|
}
|
|
|
|
if (rpc->write_line_lengths) {
|
|
switch (*status) {
|
|
case PACKET_READ_EOF:
|
|
if (!(options & PACKET_READ_GENTLE_ON_EOF))
|
|
die(_("shouldn't have EOF when not gentle on EOF"));
|
|
break;
|
|
case PACKET_READ_NORMAL:
|
|
set_packet_header(buf - 4, *appended);
|
|
break;
|
|
case PACKET_READ_DELIM:
|
|
memcpy(buf - 4, "0001", 4);
|
|
break;
|
|
case PACKET_READ_FLUSH:
|
|
memcpy(buf - 4, "0000", 4);
|
|
break;
|
|
case PACKET_READ_RESPONSE_END:
|
|
die(_("remote server sent unexpected response end packet"));
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static size_t rpc_out(void *ptr, size_t eltsize,
|
|
size_t nmemb, void *buffer_)
|
|
{
|
|
size_t max = eltsize * nmemb;
|
|
struct rpc_state *rpc = buffer_;
|
|
size_t avail = rpc->len - rpc->pos;
|
|
enum packet_read_status status;
|
|
|
|
if (!avail) {
|
|
rpc->initial_buffer = 0;
|
|
rpc->len = 0;
|
|
rpc->pos = 0;
|
|
if (!rpc->flush_read_but_not_sent) {
|
|
if (!rpc_read_from_out(rpc, 0, &avail, &status))
|
|
BUG("The entire rpc->buf should be larger than LARGE_PACKET_MAX");
|
|
if (status == PACKET_READ_FLUSH)
|
|
rpc->flush_read_but_not_sent = 1;
|
|
}
|
|
/*
|
|
* If flush_read_but_not_sent is true, we have already read one
|
|
* full request but have not fully sent it + EOF, which is why
|
|
* we need to refrain from reading.
|
|
*/
|
|
}
|
|
if (rpc->flush_read_but_not_sent) {
|
|
if (!avail) {
|
|
/*
|
|
* The line length either does not need to be sent at
|
|
* all or has already been completely sent. Now we can
|
|
* return 0, indicating EOF, meaning that the flush has
|
|
* been fully sent.
|
|
*/
|
|
rpc->flush_read_but_not_sent = 0;
|
|
return 0;
|
|
}
|
|
/*
|
|
* If avail is non-zero, the line length for the flush still
|
|
* hasn't been fully sent. Proceed with sending the line
|
|
* length.
|
|
*/
|
|
}
|
|
|
|
if (max < avail)
|
|
avail = max;
|
|
memcpy(ptr, rpc->buf + rpc->pos, avail);
|
|
rpc->pos += avail;
|
|
return avail;
|
|
}
|
|
|
|
static int rpc_seek(void *clientp, curl_off_t offset, int origin)
|
|
{
|
|
struct rpc_state *rpc = clientp;
|
|
|
|
if (origin != SEEK_SET)
|
|
BUG("rpc_seek only handles SEEK_SET, not %d", origin);
|
|
|
|
if (rpc->initial_buffer) {
|
|
if (offset < 0 || offset > rpc->len) {
|
|
error("curl seek would be outside of rpc buffer");
|
|
return CURL_SEEKFUNC_FAIL;
|
|
}
|
|
rpc->pos = offset;
|
|
return CURL_SEEKFUNC_OK;
|
|
}
|
|
error(_("unable to rewind rpc post data - try increasing http.postBuffer"));
|
|
return CURL_SEEKFUNC_FAIL;
|
|
}
|
|
|
|
struct check_pktline_state {
|
|
char len_buf[4];
|
|
int len_filled;
|
|
int remaining;
|
|
};
|
|
|
|
static void check_pktline(struct check_pktline_state *state, const char *ptr, size_t size)
|
|
{
|
|
while (size) {
|
|
if (!state->remaining) {
|
|
int digits_remaining = 4 - state->len_filled;
|
|
if (digits_remaining > size)
|
|
digits_remaining = size;
|
|
memcpy(&state->len_buf[state->len_filled], ptr, digits_remaining);
|
|
state->len_filled += digits_remaining;
|
|
ptr += digits_remaining;
|
|
size -= digits_remaining;
|
|
|
|
if (state->len_filled == 4) {
|
|
state->remaining = packet_length(state->len_buf,
|
|
sizeof(state->len_buf));
|
|
if (state->remaining < 0) {
|
|
die(_("remote-curl: bad line length character: %.4s"), state->len_buf);
|
|
} else if (state->remaining == 2) {
|
|
die(_("remote-curl: unexpected response end packet"));
|
|
} else if (state->remaining < 4) {
|
|
state->remaining = 0;
|
|
} else {
|
|
state->remaining -= 4;
|
|
}
|
|
state->len_filled = 0;
|
|
}
|
|
}
|
|
|
|
if (state->remaining) {
|
|
int remaining = state->remaining;
|
|
if (remaining > size)
|
|
remaining = size;
|
|
ptr += remaining;
|
|
size -= remaining;
|
|
state->remaining -= remaining;
|
|
}
|
|
}
|
|
}
|
|
|
|
struct rpc_in_data {
|
|
struct rpc_state *rpc;
|
|
struct active_request_slot *slot;
|
|
int check_pktline;
|
|
struct check_pktline_state pktline_state;
|
|
};
|
|
|
|
/*
|
|
* A callback for CURLOPT_WRITEFUNCTION. The return value is the bytes consumed
|
|
* from ptr.
|
|
*/
|
|
static size_t rpc_in(char *ptr, size_t eltsize,
|
|
size_t nmemb, void *buffer_)
|
|
{
|
|
size_t size = eltsize * nmemb;
|
|
struct rpc_in_data *data = buffer_;
|
|
long response_code;
|
|
|
|
if (curl_easy_getinfo(data->slot->curl, CURLINFO_RESPONSE_CODE,
|
|
&response_code) != CURLE_OK)
|
|
return size;
|
|
if (response_code >= 300)
|
|
return size;
|
|
if (size)
|
|
data->rpc->any_written = 1;
|
|
if (data->check_pktline)
|
|
check_pktline(&data->pktline_state, ptr, size);
|
|
write_or_die(data->rpc->in, ptr, size);
|
|
return size;
|
|
}
|
|
|
|
static int run_slot(struct active_request_slot *slot,
|
|
struct slot_results *results)
|
|
{
|
|
int err;
|
|
struct slot_results results_buf;
|
|
|
|
if (!results)
|
|
results = &results_buf;
|
|
|
|
err = run_one_slot(slot, results);
|
|
|
|
if (err != HTTP_OK && err != HTTP_REAUTH) {
|
|
struct strbuf msg = STRBUF_INIT;
|
|
if (results->http_code && results->http_code != 200)
|
|
strbuf_addf(&msg, "HTTP %ld", results->http_code);
|
|
if (results->curl_result != CURLE_OK) {
|
|
if (msg.len)
|
|
strbuf_addch(&msg, ' ');
|
|
strbuf_addf(&msg, "curl %d", results->curl_result);
|
|
if (curl_errorstr[0]) {
|
|
strbuf_addch(&msg, ' ');
|
|
strbuf_addstr(&msg, curl_errorstr);
|
|
}
|
|
}
|
|
error(_("RPC failed; %s"), msg.buf);
|
|
strbuf_release(&msg);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
|
|
{
|
|
struct active_request_slot *slot;
|
|
struct curl_slist *headers = http_copy_default_headers();
|
|
struct strbuf buf = STRBUF_INIT;
|
|
int err;
|
|
|
|
slot = get_active_slot();
|
|
|
|
headers = curl_slist_append(headers, rpc->hdr_content_type);
|
|
headers = curl_slist_append(headers, rpc->hdr_accept);
|
|
|
|
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
|
|
curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
|
|
curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
|
|
curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL);
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000");
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
|
|
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
|
|
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
|
|
curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &buf);
|
|
|
|
err = run_slot(slot, results);
|
|
|
|
curl_slist_free_all(headers);
|
|
strbuf_release(&buf);
|
|
return err;
|
|
}
|
|
|
|
static curl_off_t xcurl_off_t(size_t len)
|
|
{
|
|
uintmax_t size = len;
|
|
if (size > maximum_signed_value_of_type(curl_off_t))
|
|
die(_("cannot handle pushes this big"));
|
|
return (curl_off_t)size;
|
|
}
|
|
|
|
/*
|
|
* If flush_received is true, do not attempt to read any more; just use what's
|
|
* in rpc->buf.
|
|
*/
|
|
static int post_rpc(struct rpc_state *rpc, int stateless_connect, int flush_received)
|
|
{
|
|
struct active_request_slot *slot;
|
|
struct curl_slist *headers = http_copy_default_headers();
|
|
int use_gzip = rpc->gzip_request;
|
|
char *gzip_body = NULL;
|
|
size_t gzip_size = 0;
|
|
int err, large_request = 0;
|
|
int needs_100_continue = 0;
|
|
struct rpc_in_data rpc_in_data;
|
|
|
|
/* Try to load the entire request, if we can fit it into the
|
|
* allocated buffer space we can use HTTP/1.0 and avoid the
|
|
* chunked encoding mess.
|
|
*/
|
|
if (!flush_received) {
|
|
while (1) {
|
|
size_t n;
|
|
enum packet_read_status status;
|
|
|
|
if (!rpc_read_from_out(rpc, 0, &n, &status)) {
|
|
large_request = 1;
|
|
use_gzip = 0;
|
|
break;
|
|
}
|
|
if (status == PACKET_READ_FLUSH)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (large_request) {
|
|
struct slot_results results;
|
|
|
|
do {
|
|
err = probe_rpc(rpc, &results);
|
|
if (err == HTTP_REAUTH)
|
|
credential_fill(&http_auth);
|
|
} while (err == HTTP_REAUTH);
|
|
if (err != HTTP_OK)
|
|
return -1;
|
|
|
|
if (results.auth_avail & CURLAUTH_GSSNEGOTIATE)
|
|
needs_100_continue = 1;
|
|
}
|
|
|
|
headers = curl_slist_append(headers, rpc->hdr_content_type);
|
|
headers = curl_slist_append(headers, rpc->hdr_accept);
|
|
headers = curl_slist_append(headers, needs_100_continue ?
|
|
"Expect: 100-continue" : "Expect:");
|
|
|
|
/* Add Accept-Language header */
|
|
if (rpc->hdr_accept_language)
|
|
headers = curl_slist_append(headers, rpc->hdr_accept_language);
|
|
|
|
/* Add the extra Git-Protocol header */
|
|
if (rpc->protocol_header)
|
|
headers = curl_slist_append(headers, rpc->protocol_header);
|
|
|
|
retry:
|
|
slot = get_active_slot();
|
|
|
|
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
|
|
curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
|
|
curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
|
|
curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
|
|
|
|
if (large_request) {
|
|
/* The request body is large and the size cannot be predicted.
|
|
* We must use chunked encoding to send it.
|
|
*/
|
|
headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
|
|
rpc->initial_buffer = 1;
|
|
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
|
|
curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
|
|
curl_easy_setopt(slot->curl, CURLOPT_SEEKFUNCTION, rpc_seek);
|
|
curl_easy_setopt(slot->curl, CURLOPT_SEEKDATA, rpc);
|
|
if (options.verbosity > 1) {
|
|
fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
|
|
fflush(stderr);
|
|
}
|
|
|
|
} else if (gzip_body) {
|
|
/*
|
|
* If we are looping to retry authentication, then the previous
|
|
* run will have set up the headers and gzip buffer already,
|
|
* and we just need to send it.
|
|
*/
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
|
|
|
|
} else if (use_gzip && 1024 < rpc->len) {
|
|
/* The client backend isn't giving us compressed data so
|
|
* we can try to deflate it ourselves, this may save on
|
|
* the transfer time.
|
|
*/
|
|
git_zstream stream;
|
|
int ret;
|
|
|
|
git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
|
|
gzip_size = git_deflate_bound(&stream, rpc->len);
|
|
gzip_body = xmalloc(gzip_size);
|
|
|
|
stream.next_in = (unsigned char *)rpc->buf;
|
|
stream.avail_in = rpc->len;
|
|
stream.next_out = (unsigned char *)gzip_body;
|
|
stream.avail_out = gzip_size;
|
|
|
|
ret = git_deflate(&stream, Z_FINISH);
|
|
if (ret != Z_STREAM_END)
|
|
die(_("cannot deflate request; zlib deflate error %d"), ret);
|
|
|
|
ret = git_deflate_end_gently(&stream);
|
|
if (ret != Z_OK)
|
|
die(_("cannot deflate request; zlib end error %d"), ret);
|
|
|
|
gzip_size = stream.total_out;
|
|
|
|
headers = curl_slist_append(headers, "Content-Encoding: gzip");
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
|
|
|
|
if (options.verbosity > 1) {
|
|
fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
|
|
rpc->service_name,
|
|
(unsigned long)rpc->len, (unsigned long)gzip_size);
|
|
fflush(stderr);
|
|
}
|
|
} else {
|
|
/* We know the complete request size in advance, use the
|
|
* more normal Content-Length approach.
|
|
*/
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(rpc->len));
|
|
if (options.verbosity > 1) {
|
|
fprintf(stderr, "POST %s (%lu bytes)\n",
|
|
rpc->service_name, (unsigned long)rpc->len);
|
|
fflush(stderr);
|
|
}
|
|
}
|
|
|
|
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
|
|
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
|
|
rpc_in_data.rpc = rpc;
|
|
rpc_in_data.slot = slot;
|
|
rpc_in_data.check_pktline = stateless_connect;
|
|
memset(&rpc_in_data.pktline_state, 0, sizeof(rpc_in_data.pktline_state));
|
|
curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &rpc_in_data);
|
|
curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
|
|
|
|
|
|
rpc->any_written = 0;
|
|
err = run_slot(slot, NULL);
|
|
if (err == HTTP_REAUTH && !large_request) {
|
|
credential_fill(&http_auth);
|
|
goto retry;
|
|
}
|
|
if (err != HTTP_OK)
|
|
err = -1;
|
|
|
|
if (!rpc->any_written)
|
|
err = -1;
|
|
|
|
if (rpc_in_data.pktline_state.len_filled)
|
|
err = error(_("%d bytes of length header were received"), rpc_in_data.pktline_state.len_filled);
|
|
if (rpc_in_data.pktline_state.remaining)
|
|
err = error(_("%d bytes of body are still expected"), rpc_in_data.pktline_state.remaining);
|
|
|
|
if (stateless_connect)
|
|
packet_response_end(rpc->in);
|
|
|
|
curl_slist_free_all(headers);
|
|
free(gzip_body);
|
|
return err;
|
|
}
|
|
|
|
static int rpc_service(struct rpc_state *rpc, struct discovery *heads,
|
|
const char **client_argv, const struct strbuf *preamble,
|
|
struct strbuf *rpc_result)
|
|
{
|
|
const char *svc = rpc->service_name;
|
|
struct strbuf buf = STRBUF_INIT;
|
|
struct child_process client = CHILD_PROCESS_INIT;
|
|
int err = 0;
|
|
|
|
client.in = -1;
|
|
client.out = -1;
|
|
client.git_cmd = 1;
|
|
strvec_pushv(&client.args, client_argv);
|
|
if (start_command(&client))
|
|
exit(1);
|
|
write_or_die(client.in, preamble->buf, preamble->len);
|
|
if (heads)
|
|
write_or_die(client.in, heads->buf, heads->len);
|
|
|
|
rpc->alloc = http_post_buffer;
|
|
rpc->buf = xmalloc(rpc->alloc);
|
|
rpc->in = client.in;
|
|
rpc->out = client.out;
|
|
|
|
strbuf_addf(&buf, "%s%s", url.buf, svc);
|
|
rpc->service_url = strbuf_detach(&buf, NULL);
|
|
|
|
rpc->hdr_accept_language = xstrdup_or_null(http_get_accept_language_header());
|
|
|
|
strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
|
|
rpc->hdr_content_type = strbuf_detach(&buf, NULL);
|
|
|
|
strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
|
|
rpc->hdr_accept = strbuf_detach(&buf, NULL);
|
|
|
|
if (get_protocol_http_header(heads->version, &buf))
|
|
rpc->protocol_header = strbuf_detach(&buf, NULL);
|
|
else
|
|
rpc->protocol_header = NULL;
|
|
|
|
while (!err) {
|
|
int n = packet_read(rpc->out, rpc->buf, rpc->alloc, 0);
|
|
if (!n)
|
|
break;
|
|
rpc->pos = 0;
|
|
rpc->len = n;
|
|
err |= post_rpc(rpc, 0, 0);
|
|
}
|
|
|
|
close(client.in);
|
|
client.in = -1;
|
|
if (!err) {
|
|
strbuf_read(rpc_result, client.out, 0);
|
|
} else {
|
|
char buf[4096];
|
|
for (;;)
|
|
if (xread(client.out, buf, sizeof(buf)) <= 0)
|
|
break;
|
|
}
|
|
|
|
close(client.out);
|
|
client.out = -1;
|
|
|
|
err |= finish_command(&client);
|
|
free(rpc->service_url);
|
|
free(rpc->hdr_content_type);
|
|
free(rpc->hdr_accept);
|
|
free(rpc->hdr_accept_language);
|
|
free(rpc->protocol_header);
|
|
free(rpc->buf);
|
|
strbuf_release(&buf);
|
|
return err;
|
|
}
|
|
|
|
static int fetch_dumb(int nr_heads, struct ref **to_fetch)
|
|
{
|
|
struct walker *walker;
|
|
char **targets;
|
|
int ret, i;
|
|
|
|
ALLOC_ARRAY(targets, nr_heads);
|
|
if (options.depth || options.deepen_since)
|
|
die(_("dumb http transport does not support shallow capabilities"));
|
|
for (i = 0; i < nr_heads; i++)
|
|
targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid));
|
|
|
|
walker = get_http_walker(url.buf);
|
|
walker->get_verbosely = options.verbosity >= 3;
|
|
walker->get_progress = options.progress;
|
|
walker->get_recover = 0;
|
|
ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
|
|
walker_free(walker);
|
|
|
|
for (i = 0; i < nr_heads; i++)
|
|
free(targets[i]);
|
|
free(targets);
|
|
|
|
return ret ? error(_("fetch failed.")) : 0;
|
|
}
|
|
|
|
static int fetch_git(struct discovery *heads,
|
|
int nr_heads, struct ref **to_fetch)
|
|
{
|
|
struct rpc_state rpc = RPC_STATE_INIT;
|
|
struct strbuf preamble = STRBUF_INIT;
|
|
int i, err;
|
|
struct strvec args = STRVEC_INIT;
|
|
struct strbuf rpc_result = STRBUF_INIT;
|
|
|
|
strvec_pushl(&args, "fetch-pack", "--stateless-rpc",
|
|
"--stdin", "--lock-pack", NULL);
|
|
if (options.followtags)
|
|
strvec_push(&args, "--include-tag");
|
|
if (options.thin)
|
|
strvec_push(&args, "--thin");
|
|
if (options.verbosity >= 3)
|
|
strvec_pushl(&args, "-v", "-v", NULL);
|
|
if (options.check_self_contained_and_connected)
|
|
strvec_push(&args, "--check-self-contained-and-connected");
|
|
if (options.cloning)
|
|
strvec_push(&args, "--cloning");
|
|
if (options.update_shallow)
|
|
strvec_push(&args, "--update-shallow");
|
|
if (!options.progress)
|
|
strvec_push(&args, "--no-progress");
|
|
if (options.depth)
|
|
strvec_pushf(&args, "--depth=%lu", options.depth);
|
|
if (options.deepen_since)
|
|
strvec_pushf(&args, "--shallow-since=%s", options.deepen_since);
|
|
for (i = 0; i < options.deepen_not.nr; i++)
|
|
strvec_pushf(&args, "--shallow-exclude=%s",
|
|
options.deepen_not.items[i].string);
|
|
if (options.deepen_relative && options.depth)
|
|
strvec_push(&args, "--deepen-relative");
|
|
if (options.from_promisor)
|
|
strvec_push(&args, "--from-promisor");
|
|
if (options.refetch)
|
|
strvec_push(&args, "--refetch");
|
|
if (options.filter)
|
|
strvec_pushf(&args, "--filter=%s", options.filter);
|
|
strvec_push(&args, url.buf);
|
|
|
|
for (i = 0; i < nr_heads; i++) {
|
|
struct ref *ref = to_fetch[i];
|
|
if (!*ref->name)
|
|
die(_("cannot fetch by sha1 over smart http"));
|
|
packet_buf_write(&preamble, "%s %s\n",
|
|
oid_to_hex(&ref->old_oid), ref->name);
|
|
}
|
|
packet_buf_flush(&preamble);
|
|
|
|
memset(&rpc, 0, sizeof(rpc));
|
|
rpc.service_name = "git-upload-pack",
|
|
rpc.gzip_request = 1;
|
|
|
|
err = rpc_service(&rpc, heads, args.v, &preamble, &rpc_result);
|
|
if (rpc_result.len)
|
|
write_or_die(1, rpc_result.buf, rpc_result.len);
|
|
strbuf_release(&rpc_result);
|
|
strbuf_release(&preamble);
|
|
strvec_clear(&args);
|
|
return err;
|
|
}
|
|
|
|
static int fetch(int nr_heads, struct ref **to_fetch)
|
|
{
|
|
struct discovery *d = discover_refs("git-upload-pack", 0);
|
|
if (d->proto_git)
|
|
return fetch_git(d, nr_heads, to_fetch);
|
|
else
|
|
return fetch_dumb(nr_heads, to_fetch);
|
|
}
|
|
|
|
static void parse_fetch(struct strbuf *buf)
|
|
{
|
|
struct ref **to_fetch = NULL;
|
|
struct ref *list_head = NULL;
|
|
struct ref **list = &list_head;
|
|
int alloc_heads = 0, nr_heads = 0;
|
|
|
|
do {
|
|
const char *p;
|
|
if (skip_prefix(buf->buf, "fetch ", &p)) {
|
|
const char *name;
|
|
struct ref *ref;
|
|
struct object_id old_oid;
|
|
const char *q;
|
|
|
|
if (parse_oid_hex(p, &old_oid, &q))
|
|
die(_("protocol error: expected sha/ref, got '%s'"), p);
|
|
if (*q == ' ')
|
|
name = q + 1;
|
|
else if (!*q)
|
|
name = "";
|
|
else
|
|
die(_("protocol error: expected sha/ref, got '%s'"), p);
|
|
|
|
ref = alloc_ref(name);
|
|
oidcpy(&ref->old_oid, &old_oid);
|
|
|
|
*list = ref;
|
|
list = &ref->next;
|
|
|
|
ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
|
|
to_fetch[nr_heads++] = ref;
|
|
}
|
|
else
|
|
die(_("http transport does not support %s"), buf->buf);
|
|
|
|
strbuf_reset(buf);
|
|
if (strbuf_getline_lf(buf, stdin) == EOF)
|
|
return;
|
|
if (!*buf->buf)
|
|
break;
|
|
} while (1);
|
|
|
|
if (fetch(nr_heads, to_fetch))
|
|
exit(128); /* error already reported */
|
|
free_refs(list_head);
|
|
free(to_fetch);
|
|
|
|
printf("\n");
|
|
fflush(stdout);
|
|
strbuf_reset(buf);
|
|
}
|
|
|
|
static void parse_get(const char *arg)
|
|
{
|
|
struct strbuf url = STRBUF_INIT;
|
|
struct strbuf path = STRBUF_INIT;
|
|
const char *space;
|
|
|
|
space = strchr(arg, ' ');
|
|
|
|
if (!space)
|
|
die(_("protocol error: expected '<url> <path>', missing space"));
|
|
|
|
strbuf_add(&url, arg, space - arg);
|
|
strbuf_addstr(&path, space + 1);
|
|
|
|
if (http_get_file(url.buf, path.buf, NULL))
|
|
die(_("failed to download file at URL '%s'"), url.buf);
|
|
|
|
strbuf_release(&url);
|
|
strbuf_release(&path);
|
|
printf("\n");
|
|
fflush(stdout);
|
|
}
|
|
|
|
static int push_dav(int nr_spec, const char **specs)
|
|
{
|
|
struct child_process child = CHILD_PROCESS_INIT;
|
|
size_t i;
|
|
|
|
child.git_cmd = 1;
|
|
strvec_push(&child.args, "http-push");
|
|
strvec_push(&child.args, "--helper-status");
|
|
if (options.dry_run)
|
|
strvec_push(&child.args, "--dry-run");
|
|
if (options.verbosity > 1)
|
|
strvec_push(&child.args, "--verbose");
|
|
strvec_push(&child.args, url.buf);
|
|
for (i = 0; i < nr_spec; i++)
|
|
strvec_push(&child.args, specs[i]);
|
|
|
|
if (run_command(&child))
|
|
die(_("git-http-push failed"));
|
|
return 0;
|
|
}
|
|
|
|
static int push_git(struct discovery *heads, int nr_spec, const char **specs)
|
|
{
|
|
struct rpc_state rpc = RPC_STATE_INIT;
|
|
int i, err;
|
|
struct strvec args;
|
|
struct string_list_item *cas_option;
|
|
struct strbuf preamble = STRBUF_INIT;
|
|
struct strbuf rpc_result = STRBUF_INIT;
|
|
|
|
strvec_init(&args);
|
|
strvec_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status",
|
|
NULL);
|
|
|
|
if (options.thin)
|
|
strvec_push(&args, "--thin");
|
|
if (options.dry_run)
|
|
strvec_push(&args, "--dry-run");
|
|
if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS)
|
|
strvec_push(&args, "--signed=yes");
|
|
else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED)
|
|
strvec_push(&args, "--signed=if-asked");
|
|
if (options.atomic)
|
|
strvec_push(&args, "--atomic");
|
|
if (options.verbosity == 0)
|
|
strvec_push(&args, "--quiet");
|
|
else if (options.verbosity > 1)
|
|
strvec_push(&args, "--verbose");
|
|
for (i = 0; i < options.push_options.nr; i++)
|
|
strvec_pushf(&args, "--push-option=%s",
|
|
options.push_options.items[i].string);
|
|
strvec_push(&args, options.progress ? "--progress" : "--no-progress");
|
|
for_each_string_list_item(cas_option, &cas_options)
|
|
strvec_push(&args, cas_option->string);
|
|
strvec_push(&args, url.buf);
|
|
|
|
if (options.force_if_includes)
|
|
strvec_push(&args, "--force-if-includes");
|
|
|
|
strvec_push(&args, "--stdin");
|
|
for (i = 0; i < nr_spec; i++)
|
|
packet_buf_write(&preamble, "%s\n", specs[i]);
|
|
packet_buf_flush(&preamble);
|
|
|
|
memset(&rpc, 0, sizeof(rpc));
|
|
rpc.service_name = "git-receive-pack",
|
|
|
|
err = rpc_service(&rpc, heads, args.v, &preamble, &rpc_result);
|
|
if (rpc_result.len)
|
|
write_or_die(1, rpc_result.buf, rpc_result.len);
|
|
strbuf_release(&rpc_result);
|
|
strbuf_release(&preamble);
|
|
strvec_clear(&args);
|
|
return err;
|
|
}
|
|
|
|
static int push(int nr_spec, const char **specs)
|
|
{
|
|
struct discovery *heads = discover_refs("git-receive-pack", 1);
|
|
int ret;
|
|
|
|
if (heads->proto_git)
|
|
ret = push_git(heads, nr_spec, specs);
|
|
else
|
|
ret = push_dav(nr_spec, specs);
|
|
free_discovery(heads);
|
|
return ret;
|
|
}
|
|
|
|
static void parse_push(struct strbuf *buf)
|
|
{
|
|
struct strvec specs = STRVEC_INIT;
|
|
int ret;
|
|
|
|
do {
|
|
const char *arg;
|
|
if (skip_prefix(buf->buf, "push ", &arg))
|
|
strvec_push(&specs, arg);
|
|
else
|
|
die(_("http transport does not support %s"), buf->buf);
|
|
|
|
strbuf_reset(buf);
|
|
if (strbuf_getline_lf(buf, stdin) == EOF)
|
|
goto free_specs;
|
|
if (!*buf->buf)
|
|
break;
|
|
} while (1);
|
|
|
|
ret = push(specs.nr, specs.v);
|
|
printf("\n");
|
|
fflush(stdout);
|
|
|
|
if (ret)
|
|
exit(128); /* error already reported */
|
|
|
|
free_specs:
|
|
strvec_clear(&specs);
|
|
}
|
|
|
|
static int stateless_connect(const char *service_name)
|
|
{
|
|
struct discovery *discover;
|
|
struct rpc_state rpc = RPC_STATE_INIT;
|
|
struct strbuf buf = STRBUF_INIT;
|
|
const char *accept_language;
|
|
|
|
/*
|
|
* Run the info/refs request and see if the server supports protocol
|
|
* v2. If and only if the server supports v2 can we successfully
|
|
* establish a stateless connection, otherwise we need to tell the
|
|
* client to fallback to using other transport helper functions to
|
|
* complete their request.
|
|
*/
|
|
discover = discover_refs(service_name, 0);
|
|
if (discover->version != protocol_v2) {
|
|
printf("fallback\n");
|
|
fflush(stdout);
|
|
return -1;
|
|
} else {
|
|
/* Stateless Connection established */
|
|
printf("\n");
|
|
fflush(stdout);
|
|
}
|
|
accept_language = http_get_accept_language_header();
|
|
if (accept_language)
|
|
rpc.hdr_accept_language = xstrfmt("%s", accept_language);
|
|
|
|
rpc.service_name = service_name;
|
|
rpc.service_url = xstrfmt("%s%s", url.buf, rpc.service_name);
|
|
rpc.hdr_content_type = xstrfmt("Content-Type: application/x-%s-request", rpc.service_name);
|
|
rpc.hdr_accept = xstrfmt("Accept: application/x-%s-result", rpc.service_name);
|
|
if (get_protocol_http_header(discover->version, &buf)) {
|
|
rpc.protocol_header = strbuf_detach(&buf, NULL);
|
|
} else {
|
|
rpc.protocol_header = NULL;
|
|
strbuf_release(&buf);
|
|
}
|
|
rpc.buf = xmalloc(http_post_buffer);
|
|
rpc.alloc = http_post_buffer;
|
|
rpc.len = 0;
|
|
rpc.pos = 0;
|
|
rpc.in = 1;
|
|
rpc.out = 0;
|
|
rpc.any_written = 0;
|
|
rpc.gzip_request = 1;
|
|
rpc.initial_buffer = 0;
|
|
rpc.write_line_lengths = 1;
|
|
rpc.flush_read_but_not_sent = 0;
|
|
|
|
/*
|
|
* Dump the capability listing that we got from the server earlier
|
|
* during the info/refs request.
|
|
*/
|
|
write_or_die(rpc.in, discover->buf, discover->len);
|
|
|
|
/* Until we see EOF keep sending POSTs */
|
|
while (1) {
|
|
size_t avail;
|
|
enum packet_read_status status;
|
|
|
|
if (!rpc_read_from_out(&rpc, PACKET_READ_GENTLE_ON_EOF, &avail,
|
|
&status))
|
|
BUG("The entire rpc->buf should be larger than LARGE_PACKET_MAX");
|
|
if (status == PACKET_READ_EOF)
|
|
break;
|
|
if (post_rpc(&rpc, 1, status == PACKET_READ_FLUSH))
|
|
/* We would have an err here */
|
|
break;
|
|
/* Reset the buffer for next request */
|
|
rpc.len = 0;
|
|
}
|
|
|
|
free(rpc.service_url);
|
|
free(rpc.hdr_content_type);
|
|
free(rpc.hdr_accept);
|
|
free(rpc.hdr_accept_language);
|
|
free(rpc.protocol_header);
|
|
free(rpc.buf);
|
|
strbuf_release(&buf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cmd_main(int argc, const char **argv)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
int nongit;
|
|
int ret = 1;
|
|
|
|
setup_git_directory_gently(&nongit);
|
|
if (argc < 2) {
|
|
error(_("remote-curl: usage: git remote-curl <remote> [<url>]"));
|
|
goto cleanup;
|
|
}
|
|
|
|
options.verbosity = 1;
|
|
options.progress = !!isatty(2);
|
|
options.thin = 1;
|
|
string_list_init_dup(&options.deepen_not);
|
|
string_list_init_dup(&options.push_options);
|
|
|
|
/*
|
|
* Just report "remote-curl" here (folding all the various aliases
|
|
* ("git-remote-http", "git-remote-https", and etc.) here since they
|
|
* are all just copies of the same actual executable.
|
|
*/
|
|
trace2_cmd_name("remote-curl");
|
|
|
|
remote = remote_get(argv[1]);
|
|
|
|
if (argc > 2) {
|
|
end_url_with_slash(&url, argv[2]);
|
|
} else {
|
|
end_url_with_slash(&url, remote->url[0]);
|
|
}
|
|
|
|
http_init(remote, url.buf, 0);
|
|
|
|
do {
|
|
const char *arg;
|
|
|
|
if (strbuf_getline_lf(&buf, stdin) == EOF) {
|
|
if (ferror(stdin))
|
|
error(_("remote-curl: error reading command stream from git"));
|
|
goto cleanup;
|
|
}
|
|
if (buf.len == 0)
|
|
break;
|
|
if (starts_with(buf.buf, "fetch ")) {
|
|
if (nongit)
|
|
die(_("remote-curl: fetch attempted without a local repo"));
|
|
parse_fetch(&buf);
|
|
|
|
} else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) {
|
|
int for_push = !!strstr(buf.buf + 4, "for-push");
|
|
output_refs(get_refs(for_push));
|
|
|
|
} else if (starts_with(buf.buf, "push ")) {
|
|
parse_push(&buf);
|
|
|
|
} else if (skip_prefix(buf.buf, "option ", &arg)) {
|
|
char *value = strchr(arg, ' ');
|
|
int result;
|
|
|
|
if (value)
|
|
*value++ = '\0';
|
|
else
|
|
value = "true";
|
|
|
|
result = set_option(arg, value);
|
|
if (!result)
|
|
printf("ok\n");
|
|
else if (result < 0)
|
|
printf("error invalid value\n");
|
|
else
|
|
printf("unsupported\n");
|
|
fflush(stdout);
|
|
|
|
} else if (skip_prefix(buf.buf, "get ", &arg)) {
|
|
parse_get(arg);
|
|
fflush(stdout);
|
|
|
|
} else if (!strcmp(buf.buf, "capabilities")) {
|
|
printf("stateless-connect\n");
|
|
printf("fetch\n");
|
|
printf("get\n");
|
|
printf("option\n");
|
|
printf("push\n");
|
|
printf("check-connectivity\n");
|
|
printf("object-format\n");
|
|
printf("\n");
|
|
fflush(stdout);
|
|
} else if (skip_prefix(buf.buf, "stateless-connect ", &arg)) {
|
|
if (!stateless_connect(arg))
|
|
break;
|
|
} else {
|
|
error(_("remote-curl: unknown command '%s' from git"), buf.buf);
|
|
goto cleanup;
|
|
}
|
|
strbuf_reset(&buf);
|
|
} while (1);
|
|
|
|
http_cleanup();
|
|
ret = 0;
|
|
cleanup:
|
|
strbuf_release(&buf);
|
|
|
|
return ret;
|
|
}
|