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-rw-r--r--html.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/html.c b/html.c
index 0962e71..98ffaf9 100644
--- a/html.c
+++ b/html.c
@@ -185,3 +185,67 @@ int html_include(const char *filename)
fclose(f);
return 0;
}
+
+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;
+}
+
+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 http_parse_querystring(char *txt, void (*fn)(const char *name, const char *value))
+{
+ char *t, *value = NULL, c;
+
+ if (!txt)
+ return 0;
+
+ t = txt = strdup(txt);
+ if (t == NULL) {
+ printf("Out of memory\n");
+ exit(1);
+ }
+ while((c=*t) != '\0') {
+ if (c=='=') {
+ *t = '\0';
+ value = t+1;
+ } else if (c=='+') {
+ *t = ' ';
+ } else if (c=='%') {
+ t = convert_query_hexchar(t);
+ } else if (c=='&') {
+ *t = '\0';
+ (*fn)(txt, value);
+ txt = t+1;
+ value = NULL;
+ }
+ t++;
+ }
+ if (t!=txt)
+ (*fn)(txt, value);
+ return 0;
+}