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authorDaniel Stenberg <daniel@haxx.se>2018-09-19 10:17:03 +0200
committerDaniel Stenberg <daniel@haxx.se>2018-09-19 23:21:52 +0200
commit9307c219ad4741db860b864c860ac2f8bf9fad9d (patch)
treef8a75b214a770f7bc75996abee293e7e53727074 /lib
parenteb0b3acbc1beb08489222ed713ac387ca900fe90 (diff)
downloadcurl-9307c219ad4741db860b864c860ac2f8bf9fad9d.tar.gz
urlapi: add CURLU_GUESS_SCHEME and fix hostname acceptance
In order for this API to fully work for libcurl itself, it now offers a CURLU_GUESS_SCHEME flag that makes it "guess" scheme based on the host name prefix just like libcurl always did. If there's no known prefix, it will guess "http://". Separately, it relaxes the check of the host name so that IDN host names can be passed in as well. Both these changes are necessary for libcurl itself to use this API. Assisted-by: Daniel Gustafsson Closes #3018
Diffstat (limited to 'lib')
-rw-r--r--lib/urlapi.c48
1 files changed, 37 insertions, 11 deletions
diff --git a/lib/urlapi.c b/lib/urlapi.c
index f6d911667..ef565d98d 100644
--- a/lib/urlapi.c
+++ b/lib/urlapi.c
@@ -554,7 +554,7 @@ static CURLUcode junkscan(char *part)
static CURLUcode hostname_check(char *hostname, unsigned int flags)
{
- const char *l; /* accepted characters */
+ const char *l = NULL; /* accepted characters */
size_t len;
size_t hlen = strlen(hostname);
(void)flags;
@@ -564,14 +564,21 @@ static CURLUcode hostname_check(char *hostname, unsigned int flags)
l = "0123456789abcdefABCDEF::.";
hlen -= 2;
}
- else /* % for URL escaped letters */
- l = "0123456789abcdefghijklimnopqrstuvwxyz-_.ABCDEFGHIJKLIMNOPQRSTUVWXYZ%";
-
- len = strspn(hostname, l);
- if(hlen != len)
- /* hostname with bad content */
- return CURLUE_MALFORMED_INPUT;
+ if(l) {
+ /* only valid letters are ok */
+ len = strspn(hostname, l);
+ if(hlen != len)
+ /* hostname with bad content */
+ return CURLUE_MALFORMED_INPUT;
+ }
+ else {
+ /* letters from the second string is not ok */
+ len = strcspn(hostname, " ");
+ if(hlen != len)
+ /* hostname with bad content */
+ return CURLUE_MALFORMED_INPUT;
+ }
return CURLUE_OK;
}
@@ -587,7 +594,7 @@ static CURLUcode seturl(const char *url, CURLU *u, unsigned int flags)
CURLUcode result;
bool url_has_scheme = FALSE;
char schemebuf[MAX_SCHEME_LEN];
- char *schemep;
+ char *schemep = NULL;
size_t schemelen = 0;
size_t urllen;
const struct Curl_handler *h = NULL;
@@ -723,9 +730,10 @@ static CURLUcode seturl(const char *url, CURLU *u, unsigned int flags)
else {
/* no scheme! */
- if(!(flags & CURLU_DEFAULT_SCHEME))
+ if(!(flags & (CURLU_DEFAULT_SCHEME|CURLU_GUESS_SCHEME)))
return CURLUE_MALFORMED_INPUT;
- schemep = (char *) DEFAULT_SCHEME;
+ if(flags & CURLU_DEFAULT_SCHEME)
+ schemep = (char *) DEFAULT_SCHEME;
/*
* The URL was badly formatted, let's try without scheme specified.
@@ -744,6 +752,24 @@ static CURLUcode seturl(const char *url, CURLU *u, unsigned int flags)
memcpy(hostname, hostp, len);
hostname[len] = 0;
+ if((flags & CURLU_GUESS_SCHEME) && !schemep) {
+ /* legacy curl-style guess based on host name */
+ if(checkprefix("ftp.", hostname))
+ schemep = (char *)"ftp";
+ else if(checkprefix("dict.", hostname))
+ schemep = (char *)"dict";
+ else if(checkprefix("ldap.", hostname))
+ schemep = (char *)"ldap";
+ else if(checkprefix("imap.", hostname))
+ schemep = (char *)"imap";
+ else if(checkprefix("smtp.", hostname))
+ schemep = (char *)"smtp";
+ else if(checkprefix("pop3.", hostname))
+ schemep = (char *)"pop3";
+ else
+ schemep = (char *)"http";
+ }
+
len = strlen(p);
memcpy(path, p, len);
path[len] = 0;