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authorLars Hjemli <larsh@hal-2004.(none)>2007-01-04 18:53:03 +0300
committerLars Hjemli <larsh@hal-2004.(none)>2007-01-04 18:57:00 +0300
commit52e605caf573fa20fdd4fbac5e1cc69b7740b1f5 (patch)
tree62c7bfb147f93a850f430185961a89ee51b8470a
parent05b13194b4b40a2614692125d5037ef20c5fb20e (diff)
Handle %xx encoding in querystring
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)>
-rw-r--r--cgit.h2
-rw-r--r--parsing.c21
-rw-r--r--shared.c13
3 files changed, 36 insertions, 0 deletions
diff --git a/cgit.h b/cgit.h
index 249650e..eb8f08c 100644
--- a/cgit.h
+++ b/cgit.h
@@ -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,...);
diff --git a/parsing.c b/parsing.c
index 1b22fcf..4173dd4 100644
--- a/parsing.c
+++ b/parsing.c
@@ -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);
diff --git a/shared.c b/shared.c
index 7def51a..e4595fa 100644
--- a/shared.c
+++ b/shared.c
@@ -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;
+}
+