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shell32: Fix CommandLineToArgvW()'s handling of the executable path and consecutive quotes.
This commit is contained in:
Francois Gouget
Alexandre Julliard
parent
35004f84a2
commit
40b01c1bfc
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@ -64,18 +64,22 @@ WINE_DEFAULT_DEBUG_CHANNEL(shell);
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* '"a b"' -> 'a b'
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* - escaped quotes must be converted back to '"'
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* '\"' -> '"'
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* - an odd number of '\'s followed by '"' correspond to half that number
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* of '\' followed by a '"' (extension of the above)
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* '\\\"' -> '\"'
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* '\\\\\"' -> '\\"'
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* - an even number of '\'s followed by a '"' correspond to half that number
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* of '\', plus a regular quote serving as an argument delimiter (which
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* means it does not appear in the result)
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* 'a\\"b c"' -> 'a\b c'
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* 'a\\\\"b c"' -> 'a\\b c'
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* - '\' that are not followed by a '"' are copied literally
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* - consecutive backslashes preceding a quote see their number halved with
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* the remainder escaping the quote:
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* 2n backslashes + quote -> n backslashes + quote as an argument delimiter
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* 2n+1 backslashes + quote -> n backslashes + literal quote
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* - backslashes that are not followed by a quote are copied literally:
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* 'a\b' -> 'a\b'
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* 'a\\b' -> 'a\\b'
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* - in quoted strings, consecutive quotes see their number divided by three
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* with the remainder modulo 3 deciding whether to close the string or not.
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* Note that the opening quote must be counted in the consecutive quotes,
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* that's the (1+) below:
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* (1+) 3n quotes -> n quotes
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* (1+) 3n+1 quotes -> n quotes plus closes the quoted string
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* (1+) 3n+2 quotes -> n+1 quotes plus closes the quoted string
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* - in unquoted strings, the first quote opens the quoted string and the
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* remaining consecutive quotes follow the above rule.
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*/
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LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
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{
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@ -84,7 +88,7 @@ LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
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LPCWSTR s;
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LPWSTR d;
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LPWSTR cmdline;
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int in_quotes,bcount;
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int qcount,bcount;
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if(!numargs)
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{
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@ -120,12 +124,33 @@ LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
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/* --- First count the arguments */
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argc=1;
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bcount=0;
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in_quotes=0;
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s=lpCmdline;
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/* The first argument, the executable path, follows special rules */
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if (*s=='"')
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{
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/* The executable path ends at the next quote, no matter what */
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s++;
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while (*s)
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if (*s++=='"')
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break;
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}
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else
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{
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/* The executable path ends at the next space, no matter what */
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while (*s && *s!=' ' && *s!='\t')
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s++;
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}
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/* skip to the first argument, if any */
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while (*s==' ' || *s=='\t')
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s++;
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if (*s)
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argc++;
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/* Analyze the remaining arguments */
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qcount=bcount=0;
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while (*s)
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{
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if (((*s==' ' || *s=='\t') && !in_quotes))
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if ((*s==' ' || *s=='\t') && qcount==0)
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{
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/* skip to the next argument and count it if any */
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while (*s==' ' || *s=='\t')
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@ -133,25 +158,36 @@ LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
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if (*s)
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argc++;
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bcount=0;
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continue;
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}
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else if (*s=='\\')
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{
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/* '\', count them */
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bcount++;
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s++;
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}
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else if ((*s=='"') && ((bcount & 1)==0))
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else if (*s=='"')
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{
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/* unescaped '"' */
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in_quotes=!in_quotes;
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/* '"' */
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if ((bcount & 1)==0)
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qcount++; /* unescaped '"' */
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s++;
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bcount=0;
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/* consecutive quotes, see comment in copying code below */
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while (*s=='"')
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{
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qcount++;
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s++;
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}
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qcount=qcount % 3;
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if (qcount==2)
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qcount=0;
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}
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else
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{
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/* a regular character */
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bcount=0;
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s++;
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}
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s++;
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}
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/* Allocate in a single lump, the string array, and the strings that go
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@ -165,13 +201,45 @@ LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
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strcpyW(cmdline, lpCmdline);
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/* --- Then split and copy the arguments */
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argv[0]=d=cmdline;
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argc=1;
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bcount=0;
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in_quotes=0;
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s=argv[0]=d=cmdline;
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/* The first argument, the executable path, follows special rules */
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if (*d=='"')
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{
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/* The executable path ends at the next quote, no matter what */
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s=d+1;
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while (*s)
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{
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if (*s=='"')
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{
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s++;
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break;
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}
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*d++=*s++;
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}
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}
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else
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{
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/* The executable path ends at the next space, no matter what */
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while (*d && *d!=' ' && *d!='\t')
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d++;
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s=d;
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if (*s)
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s++;
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}
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/* close the argument */
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*d++=0;
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/* skip to the first argument and initialize it if any */
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while (*s==' ' || *s=='\t')
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s++;
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if (*s)
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argv[argc++]=d;
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/* Split and copy the remaining arguments */
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qcount=bcount=0;
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while (*s)
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{
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if ((*s==' ' || *s=='\t') && !in_quotes)
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if ((*s==' ' || *s=='\t') && qcount==0)
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{
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/* close the argument */
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*d++=0;
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@ -197,8 +265,7 @@ LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
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* number of '\', plus a quote which we erase.
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*/
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d-=bcount/2;
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in_quotes=!in_quotes;
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s++;
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qcount++;
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}
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else
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{
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@ -207,9 +274,24 @@ LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
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*/
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d=d-bcount/2-1;
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*d++='"';
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}
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s++;
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bcount=0;
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/* Now count the number of consecutive quotes. Note that qcount
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* already takes into account the opening quote if any, as well as
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* the quote that lead us here.
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*/
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while (*s=='"')
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{
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if (++qcount==3)
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{
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*d++='"';
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qcount=0;
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}
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s++;
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}
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bcount=0;
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if (qcount==2)
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qcount=0;
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}
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else
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{
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@ -1033,25 +1033,25 @@ static const cmdline_tests_t cmdline_tests[] =
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{"exe", "twoquotes", "next", NULL}, 0},
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{"exe three\"\"\"quotes next",
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{"exe", "three\"quotes", "next", NULL}, 0x21},
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{"exe", "three\"quotes", "next", NULL}, 0},
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{"exe four\"\"\"\" quotes\" next 4%3=1",
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{"exe", "four\" quotes", "next", "4%3=1", NULL}, 0x61},
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{"exe", "four\" quotes", "next", "4%3=1", NULL}, 0},
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{"exe five\"\"\"\"\"quotes next",
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{"exe", "five\"quotes", "next", NULL}, 0x21},
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{"exe", "five\"quotes", "next", NULL}, 0},
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{"exe six\"\"\"\"\"\"quotes next",
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{"exe", "six\"\"quotes", "next", NULL}, 0x20},
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{"exe", "six\"\"quotes", "next", NULL}, 0},
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{"exe seven\"\"\"\"\"\"\" quotes\" next 7%3=1",
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{"exe", "seven\"\" quotes", "next", "7%3=1", NULL}, 0x20},
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{"exe", "seven\"\" quotes", "next", "7%3=1", NULL}, 0},
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{"exe twelve\"\"\"\"\"\"\"\"\"\"\"\"quotes next",
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{"exe", "twelve\"\"\"\"quotes", "next", NULL}, 0x20},
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{"exe", "twelve\"\"\"\"quotes", "next", NULL}, 0},
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{"exe thirteen\"\"\"\"\"\"\"\"\"\"\"\"\" quotes\" next 13%3=1",
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{"exe", "thirteen\"\"\"\" quotes", "next", "13%3=1", NULL}, 0x20},
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{"exe", "thirteen\"\"\"\" quotes", "next", "13%3=1", NULL}, 0},
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/* Inside a quoted string the opening quote is added to the set of
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* consecutive quotes to get the effective quotes count. This gives:
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@ -1060,32 +1060,32 @@ static const cmdline_tests_t cmdline_tests[] =
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* 1+3n+2 quotes -> n+1 quotes plus closes the quoted string
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*/
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{"exe \"two\"\"quotes next",
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{"exe", "two\"quotes", "next", NULL}, 0x21},
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{"exe", "two\"quotes", "next", NULL}, 0},
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{"exe \"two\"\" next",
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{"exe", "two\"", "next", NULL}, 0x21},
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{"exe", "two\"", "next", NULL}, 0},
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{"exe \"three\"\"\" quotes\" next 4%3=1",
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{"exe", "three\" quotes", "next", "4%3=1", NULL}, 0x61},
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{"exe", "three\" quotes", "next", "4%3=1", NULL}, 0},
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{"exe \"four\"\"\"\"quotes next",
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{"exe", "four\"quotes", "next", NULL}, 0x21},
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{"exe", "four\"quotes", "next", NULL}, 0},
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{"exe \"five\"\"\"\"\"quotes next",
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{"exe", "five\"\"quotes", "next", NULL}, 0x20},
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{"exe", "five\"\"quotes", "next", NULL}, 0},
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{"exe \"six\"\"\"\"\"\" quotes\" next 7%3=1",
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{"exe", "six\"\" quotes", "next", "7%3=1", NULL}, 0x20},
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{"exe", "six\"\" quotes", "next", "7%3=1", NULL}, 0},
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{"exe \"eleven\"\"\"\"\"\"\"\"\"\"\"quotes next",
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{"exe", "eleven\"\"\"\"quotes", "next", NULL}, 0x20},
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{"exe", "eleven\"\"\"\"quotes", "next", NULL}, 0},
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{"exe \"twelve\"\"\"\"\"\"\"\"\"\"\"\" quotes\" next 13%3=1",
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{"exe", "twelve\"\"\"\" quotes", "next", "13%3=1", NULL}, 0x20},
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{"exe", "twelve\"\"\"\" quotes", "next", "13%3=1", NULL}, 0},
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/* Escaped consecutive quotes are fun */
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{"exe \"the crazy \\\\\"\"\"\\\\\" quotes",
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{"exe", "the crazy \\\"\\", "quotes", NULL}, 0x21},
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{"exe", "the crazy \\\"\\", "quotes", NULL}, 0},
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/* The executable path has its own rules!!!
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* - Backslashes have no special meaning.
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@ -1099,16 +1099,16 @@ static const cmdline_tests_t cmdline_tests[] =
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* argument, the latter is parsed using the regular rules.
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*/
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{"exe\"file\"path arg1",
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{"exe\"file\"path", "arg1", NULL}, 0x10},
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{"exe\"file\"path", "arg1", NULL}, 0},
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{"exe\"file\"path\targ1",
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{"exe\"file\"path", "arg1", NULL}, 0x10},
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{"exe\"file\"path", "arg1", NULL}, 0},
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{"exe\"path\\ arg1",
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{"exe\"path\\", "arg1", NULL}, 0x31},
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{"exe\"path\\", "arg1", NULL}, 0},
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{"\\\"exe \"arg one\"",
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{"\\\"exe", "arg one", NULL}, 0x10},
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{"\\\"exe", "arg one", NULL}, 0},
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{"\"spaced exe\" \"next arg\"",
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{"spaced exe", "next arg", NULL}, 0},
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@ -1117,19 +1117,19 @@ static const cmdline_tests_t cmdline_tests[] =
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{"spaced exe", "next arg", NULL}, 0},
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{"\"exe\"arg\" one\" argtwo",
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{"exe", "arg one", "argtwo", NULL}, 0x31},
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{"exe", "arg one", "argtwo", NULL}, 0},
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{"\"spaced exe\\\"arg1 arg2",
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{"spaced exe\\", "arg1", "arg2", NULL}, 0x11},
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{"spaced exe\\", "arg1", "arg2", NULL}, 0},
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{"\"two\"\" arg1 ",
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{"two", " arg1 ", NULL}, 0x11},
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{"two", " arg1 ", NULL}, 0},
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{"\"three\"\"\" arg2",
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{"three", "", "arg2", NULL}, 0x61},
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{"three", "", "arg2", NULL}, 0},
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{"\"four\"\"\"\"arg1",
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{"four", "\"arg1", NULL}, 0x11},
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{"four", "\"arg1", NULL}, 0},
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/* If the first character is a space then the executable path is empty */
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{" \"arg\"one argtwo",
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@ -1270,7 +1270,7 @@ static const argify_tests_t argify_tests[] =
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/* Only (double-)quotes have a special meaning. */
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{"Params23456", "'p2 p3` p4\\ $even", 0x40,
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{" \"'p2\" \"p3`\" \"p4\\\" \"$even\" \"\"",
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{"", "'p2", "p3`", "p4\" $even \"", NULL}, 0x80}},
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{"", "'p2", "p3`", "p4\" $even \"", NULL}, 0}},
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{"Params23456", "p=2 p-3 p4\tp4\rp4\np4", 0x1c2,
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{" \"p=2\" \"p-3\" \"p4\tp4\rp4\np4\" \"\" \"\"",
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@ -1292,11 +1292,11 @@ static const argify_tests_t argify_tests[] =
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{"Params23456789", "three\"\"\"quotes \"p four\" three\"\"\"quotes p6", 0xff3,
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{" \"three\"\" \"quotes\" \"p four\" \"three\"\" \"quotes\" \"p6\" \"\" \"\"",
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{"", "three\"", "quotes", "p four", "three\"", "quotes", "p6", "", "", NULL}, 0x7e1}},
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{"", "three\"", "quotes", "p four", "three\"", "quotes", "p6", "", "", NULL}, 0}},
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{"Params23456789", "four\"\"\"\"quotes \"p three\" four\"\"\"\"quotes p5", 0xf3,
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{" \"four\"\"quotes\" \"p three\" \"four\"\"quotes\" \"p5\" \"\" \"\" \"\" \"\"",
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{"", "four\"quotes p", "three fourquotes p5 \"", "", "", "", NULL}, 0xde1}},
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{"", "four\"quotes p", "three fourquotes p5 \"", "", "", "", NULL}, 0}},
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/* Quoted strings cannot be continued by tacking on a non space character
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* either.
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@ -1320,11 +1320,11 @@ static const argify_tests_t argify_tests[] =
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{"Params23456789", "\"three q\"\"\"uotes \"p four\" \"three q\"\"\"uotes p7", 0xff3,
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{" \"three q\"\" \"uotes\" \"p four\" \"three q\"\" \"uotes\" \"p7\" \"\" \"\"",
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{"", "three q\"", "uotes", "p four", "three q\"", "uotes", "p7", "", "", NULL}, 0x7e1}},
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{"", "three q\"", "uotes", "p four", "three q\"", "uotes", "p7", "", "", NULL}, 0}},
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{"Params23456789", "\"four \"\"\"\" quotes\" \"p three\" \"four \"\"\"\" quotes\" p5", 0xff3,
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{" \"four \"\" quotes\" \"p three\" \"four \"\" quotes\" \"p5\" \"\" \"\" \"\" \"\"",
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{"", "four \"", "quotes p", "three four", "", "quotes p5 \"", "", "", "", NULL}, 0x3e0}},
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{"", "four \"", "quotes p", "three four", "", "quotes p5 \"", "", "", "", NULL}, 0}},
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/* The quoted string rules also apply to consecutive quotes at the start
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* of a parameter but don't count the opening quote!
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@ -1335,11 +1335,11 @@ static const argify_tests_t argify_tests[] =
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{"Params23456789", "\"\"\"three quotes\" \"p three\" \"\"\"three quotes\" p5", 0x6f3,
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{" \"\"three quotes\" \"p three\" \"\"three quotes\" \"p5\" \"\" \"\" \"\" \"\"",
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{"", "three", "quotes p", "three \"three", "quotes p5 \"", "", "", "", NULL}, 0x181}},
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{"", "three", "quotes p", "three \"three", "quotes p5 \"", "", "", "", NULL}, 0}},
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{"Params23456789", "\"\"\"\"fourquotes \"p four\" \"\"\"\"fourquotes p7", 0xbf3,
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{" \"\"\" \"fourquotes\" \"p four\" \"\"\" \"fourquotes\" \"p7\" \"\" \"\"",
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{"", "\"", "fourquotes", "p four", "\"", "fourquotes", "p7", "", "", NULL}, 0x7e1}},
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{"", "\"", "fourquotes", "p four", "\"", "fourquotes", "p7", "", "", NULL}, 0}},
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/* An unclosed quoted string gets lost! */
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{"Params23456", "p2 \"p3\" \"p4 is lost", 0x1c3,
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