/* like strncasecmp but ignores ws characters */
static int
httpHeaderStrCmp(const char *h1, const char *h2, int len)
{
int len1 = 0;
int len2 = 0;
assert(h1 && h2);
/* fast check first */
if (!strncasecmp(h1, h2, len))
return 0;
while (1) {
const char c1 = xtoupper(h1[len1 += xcountws(h1 + len1)]);
const char c2 = xtoupper(h2[len2 += xcountws(h2 + len2)]);
if (c1 < c2)
return -len1;
if (c1 > c2)
return +len1;
if (!c1 && !c2)
return 0;
if (c1)
len1++;
if (c2)
len2++;
}
/* NOTREACHED */
return 0;
}
/*
* iterates through a 0-terminated string of items separated by 'del's.
* white space around 'del' is considered to be a part of 'del'
* like strtok, but preserves the source, and can iterate several strings at once
*
* returns true if next item is found.
* init pos with NULL to start iteration.
*/
int
strListGetItem(const String * str, char del, const char **item, int *ilen, const char **pos)
{
size_t len;
assert(str && item && pos);
if (*pos) {
if (!**pos) /* end of string */
return 0;
else
(*pos)++;
} else {
*pos = strBuf(*str);
if (!*pos)
return 0;
}
/* skip leading ws (ltrim) */
*pos += xcountws(*pos);
*item = *pos; /* remember item's start */
/* find next delimiter */
*pos = strchr(*item, del);
if (!*pos) /* last item */
*pos = *item + strlen(*item);
len = *pos - *item; /* *pos points to del or '\0' */
/* rtrim */
while (len > 0 && xisspace((*item)[len - 1]))
len--;
if (ilen)
*ilen = len;
return len > 0;
}
const char *
httpHeaderGetAuth(const HttpHeader * hdr, http_hdr_type id, const char *auth_scheme)
{
const char *field;
int l;
assert(hdr && auth_scheme);
field = httpHeaderGetStr(hdr, id);
if (!field) /* no authorization field */
return NULL;
l = strlen(auth_scheme);
if (!l || strncasecmp(field, auth_scheme, l)) /* wrong scheme */
return NULL;
field += l;
if (!xisspace(*field)) /* wrong scheme */
return NULL;
/* skip white space */
field += xcountws(field);
if (!*field) /* no authorization cookie */
return NULL;
return base64_decode(field);
}
