mirror of
https://github.com/git/git
synced 2024-10-28 19:25:47 +00:00
650c449250
Every program which links against libgit.a must call this function, or risk hitting an assert() in system_path() that checks whether we have configured argv0_path (though only when RUNTIME_PREFIX is defined, so essentially only on Windows). Looking at the diff, you can see that putting it into the common main() saves us having to do it individually in each of the external commands. But what you can't see are the cases where we _should_ have been doing so, but weren't (e.g., git-credential-store, and all of the t/helper test programs). This has been an accident-waiting-to-happen for a long time, but wasn't triggered until recently because it involves one of those programs actually calling system_path(). That happened with git-credential-store in v2.8.0 withae5f677
(lazily load core.sharedrepository, 2016-03-11). The program: - takes a lock file, which... - opens a tempfile, which... - calls adjust_shared_perm to fix permissions, which... - lazy-loads the config (as ofae5f677
), which... - calls system_path() to find the location of /etc/gitconfig On systems with RUNTIME_PREFIX, this means credential-store reliably hits that assert() and cannot be used. We never noticed in the test suite, because we set GIT_CONFIG_NOSYSTEM there, which skips the system_path() lookup entirely. But if we were to tweak git_config() to find /etc/gitconfig even when we aren't going to open it, then the test suite shows multiple failures (for credential-store, and for some other test helpers). I didn't include that tweak here because it's way too specific to this particular call to be worth carrying around what is essentially dead code. The implementation is fairly straightforward, with one exception: there is exactly one caller (git.c) that actually cares about the result of the function, and not the side-effect of setting up argv0_path. We can accommodate that by simply replacing the value of argv[0] in the array we hand down to cmd_main(). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1071 lines
26 KiB
C
1071 lines
26 KiB
C
#include "cache.h"
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#include "remote.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 "exec_cmd.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 "sideband.h"
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#include "argv-array.h"
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#include "credential.h"
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#include "sha1-array.h"
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#include "send-pack.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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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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};
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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, "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_addf(&val, "--" CAS_OPT_NAME "=%s", value);
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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, "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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#if LIBCURL_VERSION_NUM >= 0x070a08
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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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#endif /* LIBCURL_VERSION_NUM >= 0x070a08 */
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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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const 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 sha1_array shallow;
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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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get_remote_heads(-1, heads->buf, heads->len, &list,
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for_push ? REF_NORMAL : 0, NULL, &heads->shallow);
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return list;
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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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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 != 40)
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die("%sinfo/refs not valid: is this a git repository?",
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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(start, &ref->old_oid);
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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.sha1);
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free(d->buf_alloc);
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free_refs(d->refs);
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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 struct discovery *discover_refs(const char *service, int for_push)
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{
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struct strbuf exp = STRBUF_INIT;
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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 discovery *last = last_discovery;
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int http_ret, maybe_smart = 0;
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struct http_get_options options;
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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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memset(&options, 0, sizeof(options));
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options.content_type = &type;
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options.charset = &charset;
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options.effective_url = &effective_url;
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options.base_url = &url;
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options.no_cache = 1;
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options.keep_error = 1;
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http_ret = http_get_strbuf(refs_url.buf, &buffer, &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", 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'", url.buf);
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default:
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show_http_message(&type, &charset, &buffer);
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die("unable to access '%s': %s", url.buf, curl_errorstr);
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}
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last= xcalloc(1, sizeof(*last_discovery));
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last->service = service;
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last->buf_alloc = strbuf_detach(&buffer, &last->len);
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last->buf = last->buf_alloc;
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strbuf_addf(&exp, "application/x-%s-advertisement", service);
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if (maybe_smart &&
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(5 <= last->len && last->buf[4] == '#') &&
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!strbuf_cmp(&exp, &type)) {
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char *line;
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/*
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* smart HTTP response; validate that the service
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* pkt-line matches our request.
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*/
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line = packet_read_line_buf(&last->buf, &last->len, NULL);
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strbuf_reset(&exp);
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strbuf_addf(&exp, "# service=%s", service);
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if (strcmp(line, exp.buf))
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die("invalid server response; got '%s'", line);
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strbuf_release(&exp);
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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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while (packet_read_line_buf(&last->buf, &last->len, NULL))
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;
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last->proto_git = 1;
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}
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if (last->proto_git)
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last->refs = parse_git_refs(last, for_push);
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else
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last->refs = parse_info_refs(last);
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strbuf_release(&refs_url);
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strbuf_release(&exp);
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strbuf_release(&type);
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strbuf_release(&charset);
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strbuf_release(&effective_url);
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strbuf_release(&buffer);
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last_discovery = last;
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return last;
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}
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static struct ref *get_refs(int for_push)
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{
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struct discovery *heads;
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if (for_push)
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heads = discover_refs("git-receive-pack", for_push);
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else
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heads = discover_refs("git-upload-pack", for_push);
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return heads->refs;
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}
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static void output_refs(struct ref *refs)
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{
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struct ref *posn;
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for (posn = refs; posn; posn = posn->next) {
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if (posn->symref)
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printf("@%s %s\n", posn->symref, posn->name);
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else
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printf("%s %s\n", oid_to_hex(&posn->old_oid), posn->name);
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}
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printf("\n");
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fflush(stdout);
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}
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struct rpc_state {
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const char *service_name;
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const char **argv;
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struct strbuf *stdin_preamble;
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char *service_url;
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char *hdr_content_type;
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char *hdr_accept;
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char *buf;
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size_t alloc;
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size_t len;
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size_t pos;
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int in;
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int out;
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struct strbuf result;
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unsigned gzip_request : 1;
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unsigned initial_buffer : 1;
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};
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static size_t rpc_out(void *ptr, size_t eltsize,
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size_t nmemb, void *buffer_)
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{
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size_t max = eltsize * nmemb;
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struct rpc_state *rpc = buffer_;
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size_t avail = rpc->len - rpc->pos;
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if (!avail) {
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rpc->initial_buffer = 0;
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avail = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
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if (!avail)
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return 0;
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rpc->pos = 0;
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rpc->len = avail;
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}
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if (max < avail)
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avail = max;
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memcpy(ptr, rpc->buf + rpc->pos, avail);
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rpc->pos += avail;
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return avail;
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}
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#ifndef NO_CURL_IOCTL
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static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
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{
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struct rpc_state *rpc = clientp;
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switch (cmd) {
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case CURLIOCMD_NOP:
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return CURLIOE_OK;
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case CURLIOCMD_RESTARTREAD:
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if (rpc->initial_buffer) {
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rpc->pos = 0;
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return CURLIOE_OK;
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}
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error("unable to rewind rpc post data - try increasing http.postBuffer");
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return CURLIOE_FAILRESTART;
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default:
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return CURLIOE_UNKNOWNCMD;
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}
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}
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#endif
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static size_t rpc_in(char *ptr, size_t eltsize,
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size_t nmemb, void *buffer_)
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{
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size_t size = eltsize * nmemb;
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struct rpc_state *rpc = buffer_;
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write_or_die(rpc->in, ptr, size);
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return size;
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}
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|
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static int run_slot(struct active_request_slot *slot,
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struct slot_results *results)
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|
{
|
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int err;
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struct slot_results results_buf;
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|
|
if (!results)
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results = &results_buf;
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err = run_one_slot(slot, results);
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|
|
if (err != HTTP_OK && err != HTTP_REAUTH) {
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|
struct strbuf msg = STRBUF_INIT;
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if (results->http_code && results->http_code != 200)
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strbuf_addf(&msg, "HTTP %ld", results->http_code);
|
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if (results->curl_result != CURLE_OK) {
|
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if (msg.len)
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strbuf_addch(&msg, ' ');
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strbuf_addf(&msg, "curl %d", results->curl_result);
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if (curl_errorstr[0]) {
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strbuf_addch(&msg, ' ');
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strbuf_addstr(&msg, curl_errorstr);
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}
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}
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error("RPC failed; %s", msg.buf);
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strbuf_release(&msg);
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}
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|
|
return err;
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}
|
|
|
|
static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
|
|
{
|
|
struct active_request_slot *slot;
|
|
struct curl_slist *headers = NULL;
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|
struct strbuf buf = STRBUF_INIT;
|
|
int err;
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|
|
slot = get_active_slot();
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|
|
headers = curl_slist_append(headers, rpc->hdr_content_type);
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headers = curl_slist_append(headers, rpc->hdr_accept);
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|
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curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
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curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
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curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
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curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL);
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curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000");
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curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
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|
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
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|
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
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|
curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
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|
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err = run_slot(slot, results);
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|
|
curl_slist_free_all(headers);
|
|
strbuf_release(&buf);
|
|
return err;
|
|
}
|
|
|
|
static int post_rpc(struct rpc_state *rpc)
|
|
{
|
|
struct active_request_slot *slot;
|
|
struct curl_slist *headers = NULL;
|
|
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;
|
|
|
|
/* 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.
|
|
*/
|
|
while (1) {
|
|
size_t left = rpc->alloc - rpc->len;
|
|
char *buf = rpc->buf + rpc->len;
|
|
int n;
|
|
|
|
if (left < LARGE_PACKET_MAX) {
|
|
large_request = 1;
|
|
use_gzip = 0;
|
|
break;
|
|
}
|
|
|
|
n = packet_read(rpc->out, NULL, NULL, buf, left, 0);
|
|
if (!n)
|
|
break;
|
|
rpc->len += n;
|
|
}
|
|
|
|
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:");
|
|
|
|
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, "gzip");
|
|
|
|
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);
|
|
#ifndef NO_CURL_IOCTL
|
|
curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
|
|
curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
|
|
#endif
|
|
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, 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, 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, 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);
|
|
curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
|
|
|
|
err = run_slot(slot, NULL);
|
|
if (err == HTTP_REAUTH && !large_request) {
|
|
credential_fill(&http_auth);
|
|
goto retry;
|
|
}
|
|
if (err != HTTP_OK)
|
|
err = -1;
|
|
|
|
curl_slist_free_all(headers);
|
|
free(gzip_body);
|
|
return err;
|
|
}
|
|
|
|
static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
|
|
{
|
|
const char *svc = rpc->service_name;
|
|
struct strbuf buf = STRBUF_INIT;
|
|
struct strbuf *preamble = rpc->stdin_preamble;
|
|
struct child_process client = CHILD_PROCESS_INIT;
|
|
int err = 0;
|
|
|
|
client.in = -1;
|
|
client.out = -1;
|
|
client.git_cmd = 1;
|
|
client.argv = rpc->argv;
|
|
if (start_command(&client))
|
|
exit(1);
|
|
if (preamble)
|
|
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_init(&rpc->result, 0);
|
|
|
|
strbuf_addf(&buf, "%s%s", url.buf, svc);
|
|
rpc->service_url = strbuf_detach(&buf, NULL);
|
|
|
|
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);
|
|
|
|
while (!err) {
|
|
int n = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
|
|
if (!n)
|
|
break;
|
|
rpc->pos = 0;
|
|
rpc->len = n;
|
|
err |= post_rpc(rpc);
|
|
}
|
|
|
|
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->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)
|
|
die("dumb http transport does not support --depth");
|
|
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_all = 1;
|
|
walker->get_tree = 1;
|
|
walker->get_history = 1;
|
|
walker->get_verbosely = options.verbosity >= 3;
|
|
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;
|
|
struct strbuf preamble = STRBUF_INIT;
|
|
char *depth_arg = NULL;
|
|
int argc = 0, i, err;
|
|
const char *argv[17];
|
|
|
|
argv[argc++] = "fetch-pack";
|
|
argv[argc++] = "--stateless-rpc";
|
|
argv[argc++] = "--stdin";
|
|
argv[argc++] = "--lock-pack";
|
|
if (options.followtags)
|
|
argv[argc++] = "--include-tag";
|
|
if (options.thin)
|
|
argv[argc++] = "--thin";
|
|
if (options.verbosity >= 3) {
|
|
argv[argc++] = "-v";
|
|
argv[argc++] = "-v";
|
|
}
|
|
if (options.check_self_contained_and_connected)
|
|
argv[argc++] = "--check-self-contained-and-connected";
|
|
if (options.cloning)
|
|
argv[argc++] = "--cloning";
|
|
if (options.update_shallow)
|
|
argv[argc++] = "--update-shallow";
|
|
if (!options.progress)
|
|
argv[argc++] = "--no-progress";
|
|
if (options.depth) {
|
|
struct strbuf buf = STRBUF_INIT;
|
|
strbuf_addf(&buf, "--depth=%lu", options.depth);
|
|
depth_arg = strbuf_detach(&buf, NULL);
|
|
argv[argc++] = depth_arg;
|
|
}
|
|
argv[argc++] = url.buf;
|
|
argv[argc++] = NULL;
|
|
|
|
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.argv = argv;
|
|
rpc.stdin_preamble = &preamble;
|
|
rpc.gzip_request = 1;
|
|
|
|
err = rpc_service(&rpc, heads);
|
|
if (rpc.result.len)
|
|
write_or_die(1, rpc.result.buf, rpc.result.len);
|
|
strbuf_release(&rpc.result);
|
|
strbuf_release(&preamble);
|
|
free(depth_arg);
|
|
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;
|
|
|
|
if (get_oid_hex(p, &old_oid))
|
|
die("protocol error: expected sha/ref, got %s'", p);
|
|
if (p[GIT_SHA1_HEXSZ] == ' ')
|
|
name = p + GIT_SHA1_HEXSZ + 1;
|
|
else if (!p[GIT_SHA1_HEXSZ])
|
|
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 int push_dav(int nr_spec, char **specs)
|
|
{
|
|
struct child_process child = CHILD_PROCESS_INIT;
|
|
size_t i;
|
|
|
|
child.git_cmd = 1;
|
|
argv_array_push(&child.args, "http-push");
|
|
argv_array_push(&child.args, "--helper-status");
|
|
if (options.dry_run)
|
|
argv_array_push(&child.args, "--dry-run");
|
|
if (options.verbosity > 1)
|
|
argv_array_push(&child.args, "--verbose");
|
|
argv_array_push(&child.args, url.buf);
|
|
for (i = 0; i < nr_spec; i++)
|
|
argv_array_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, char **specs)
|
|
{
|
|
struct rpc_state rpc;
|
|
int i, err;
|
|
struct argv_array args;
|
|
struct string_list_item *cas_option;
|
|
struct strbuf preamble = STRBUF_INIT;
|
|
|
|
argv_array_init(&args);
|
|
argv_array_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status",
|
|
NULL);
|
|
|
|
if (options.thin)
|
|
argv_array_push(&args, "--thin");
|
|
if (options.dry_run)
|
|
argv_array_push(&args, "--dry-run");
|
|
if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS)
|
|
argv_array_push(&args, "--signed=yes");
|
|
else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED)
|
|
argv_array_push(&args, "--signed=if-asked");
|
|
if (options.verbosity == 0)
|
|
argv_array_push(&args, "--quiet");
|
|
else if (options.verbosity > 1)
|
|
argv_array_push(&args, "--verbose");
|
|
argv_array_push(&args, options.progress ? "--progress" : "--no-progress");
|
|
for_each_string_list_item(cas_option, &cas_options)
|
|
argv_array_push(&args, cas_option->string);
|
|
argv_array_push(&args, url.buf);
|
|
|
|
argv_array_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",
|
|
rpc.argv = args.argv;
|
|
rpc.stdin_preamble = &preamble;
|
|
|
|
err = rpc_service(&rpc, heads);
|
|
if (rpc.result.len)
|
|
write_or_die(1, rpc.result.buf, rpc.result.len);
|
|
strbuf_release(&rpc.result);
|
|
strbuf_release(&preamble);
|
|
argv_array_clear(&args);
|
|
return err;
|
|
}
|
|
|
|
static int push(int nr_spec, 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)
|
|
{
|
|
char **specs = NULL;
|
|
int alloc_spec = 0, nr_spec = 0, i, ret;
|
|
|
|
do {
|
|
if (starts_with(buf->buf, "push ")) {
|
|
ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
|
|
specs[nr_spec++] = xstrdup(buf->buf + 5);
|
|
}
|
|
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(nr_spec, specs);
|
|
printf("\n");
|
|
fflush(stdout);
|
|
|
|
if (ret)
|
|
exit(128); /* error already reported */
|
|
|
|
free_specs:
|
|
for (i = 0; i < nr_spec; i++)
|
|
free(specs[i]);
|
|
free(specs);
|
|
}
|
|
|
|
int cmd_main(int argc, const char **argv)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
int nongit;
|
|
|
|
git_setup_gettext();
|
|
|
|
setup_git_directory_gently(&nongit);
|
|
if (argc < 2) {
|
|
error("remote-curl: usage: git remote-curl <remote> [<url>]");
|
|
return 1;
|
|
}
|
|
|
|
options.verbosity = 1;
|
|
options.progress = !!isatty(2);
|
|
options.thin = 1;
|
|
|
|
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");
|
|
return 1;
|
|
}
|
|
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 (!strcmp(buf.buf, "capabilities")) {
|
|
printf("fetch\n");
|
|
printf("option\n");
|
|
printf("push\n");
|
|
printf("check-connectivity\n");
|
|
printf("\n");
|
|
fflush(stdout);
|
|
} else {
|
|
error("remote-curl: unknown command '%s' from git", buf.buf);
|
|
return 1;
|
|
}
|
|
strbuf_reset(&buf);
|
|
} while (1);
|
|
|
|
http_cleanup();
|
|
|
|
return 0;
|
|
}
|