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Handle %xx encoding in querystring

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Convert valid %xx expressions in querystring to ascii, ignore invalid
expressions (i.e. eat the three characters %xx).

Signed-off-by: Lars Hjemli <larsh@hal-2004.(none)>
This commit is contained in:
Lars Hjemli 2007-01-04 16:53:03 +01:00
parent 05b13194b4
commit 52e605caf5
3 changed files with 36 additions and 0 deletions
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2
cgit.h
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@ -67,6 +67,8 @@ extern void cgit_global_config_cb(const char *name, const char *value);
extern void cgit_repo_config_cb(const char *name, const char *value);
extern void cgit_querystring_cb(const char *name, const char *value);
extern int hextoint(char c);
extern void *cgit_free_commitinfo(struct commitinfo *info);
extern char *fmt(const char *format,...);

21
parsing.c
View File

@ -79,6 +79,25 @@ int cgit_read_config(const char *filename, configfn fn)
return ret;
}
char *convert_query_hexchar(char *txt)
{
int d1, d2;
if (strlen(txt) < 3) {
*txt = '\0';
return txt-1;
}
d1 = hextoint(*(txt+1));
d2 = hextoint(*(txt+2));
if (d1<0 || d2<0) {
strcpy(txt, txt+3);
return txt-1;
} else {
*txt = d1 * 16 + d2;
strcpy(txt+1, txt+3);
return txt;
}
}
int cgit_parse_query(char *txt, configfn fn)
{
char *t, *value = NULL, c;
@ -94,6 +113,8 @@ int cgit_parse_query(char *txt, configfn fn)
value = t+1;
} else if (c=='+') {
*t = ' ';
} else if (c=='%') {
t = convert_query_hexchar(t);
} else if (c=='&') {
*t = '\0';
(*fn)(txt, value);

13
shared.c
View File

@ -113,3 +113,16 @@ void *cgit_free_commitinfo(struct commitinfo *info)
free(info);
return NULL;
}
int hextoint(char c)
{
if (c >= 'a' && c <= 'f')
return 10 + c - 'a';
else if (c >= 'A' && c <= 'F')
return 10 + c - 'A';
else if (c >= '0' && c <= '9')
return c - '0';
else
return -1;
}