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Add a function to parse an uri in stdlib.

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This commit is contained in:
Andreas Schneider 2008-08-12 15:37:02 +02:00
parent b5da50b035
commit 04d022f2ae
2 changed files with 266 additions and 4 deletions
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242
src/std/c_path.c
View file

@ -17,10 +17,15 @@
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* vim: ts=2 sw=2 et cindent
* vim: ft=c.doxygen ts=2 sw=2 et cindent
*/
#include <stdio.h>
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -108,3 +113,236 @@ char *c_basename (const char *path) {
return newpath;
}
int c_parse_uri(const char *uri,
char **scheme,
char **user, char **passwd,
char **host, unsigned int *port,
char **path) {
const char *p, *z;
if (uri == NULL || *uri == '\0') {
return -1;
}
/*
* uri = scheme://user:password@host:port/path
* p = ^
* z = ^
*/
p = z = uri;
/* check for valid scheme; git+ssh, pop3 */
while (isalpha((int) *p) || isdigit((int) *p) ||
*p == '+' || *p == '-') {
/*
* uri = scheme://user:password@host:port/path
* p = ^
* z = ^
*/
p++;
}
/* get scheme */
if (*p == ':') {
if (scheme != NULL) {
*scheme = c_strndup(z, p - z);
}
p++;
z = p;
}
/*
* uri = scheme://user:password@host:port/path
* p = ^
* z = ^
*/
p = z;
/* do we have a hostname */
if (p[0] == '/' && p[1] == '/') {
/*
* uri = scheme://user:password@host:port/path
* p = ^
* z = ^
*/
z += 2;
p = z;
/* check for user and passwd */
while (*p && *p != '@' && *p != '/') {
/*
* uri = scheme://user:password@host:port/path
* p = ^ or ^
* z = ^
*/
p++;
}
/* check for user and password */
if (*p == '@') {
const char *q;
q = p;
/* check if we have a password */
while (q > z && *q != ':') {
/*
* uri = scheme://user:password@host:port/path
* p = ^
* z = ^
* q = ^
*/
q--;
}
/* password found */
if (*q == ':') {
if (user != NULL) {
*user = c_strndup(z, q - z);
}
if (passwd != NULL) {
*passwd = c_strndup(q + 1, p - (q + 1));
}
} else {
/* user only */
if (user != NULL) {
*user = c_strndup(z, p - z);
}
}
p++;
z = p;
}
/*
* uri = scheme://user:password@host:port/path
* p = ^
* z = ^
*/
p = z;
/* check for IPv6 address */
if (*p == '[') {
/*
* uri = scheme://user:password@[2001:0db8:85a3:08d3:1319:8a2e:0370:7344]:port/path
* p = ^
* z = ^
*/
p++;
/* check if we have a valid IPv6 address */
while (*p && (isxdigit((int) *p) || *p == '.' || *p == ':')) {
/*
* uri = scheme://user:password@[2001:0db8:85a3:08d3:1319:8a2e:0370:7344]:port/path
* p = ^
* z = ^
*/
p++;
}
/* valid IPv6 address found */
if (*p == ']') {
/*
* uri = scheme://user:password@[2001:0db8:85a3:08d3:1319:8a2e:0370:7344]:port/path
* p = ^
* z = ^
*/
z++;
if (host != NULL) {
*host = c_strndup(z, p - z);
}
/*
* uri = scheme://user:password@[2001:0db8:85a3:08d3:1319:8a2e:0370:7344]:port/path
* p = ^
* z = ^
*/
p++;
} else {
/* invalid IPv6 address, assume a hostname */
p = z;
while (*p && *p != ':' && *p != '/') {
p++;
/*
* uri = scheme://user:password@host:port/path
* p = ^ or ^
* z = ^
*/
}
if (host != NULL) {
*host = c_strndup(z, p - z);
}
}
} else {
/* check for hostname */
while (*p && *p != ':' && *p != '/') {
/*
* uri = scheme://user:password@host:port/path
* p = ^ ^
* z = ^
*/
p++;
}
if (host != NULL) {
*host = c_strndup(z, p - z);
}
}
z = p;
/* check for port */
if (*p == ':') {
char **e;
/*
* uri = scheme://user:password@host:port/path
* p = ^
* z = ^
*/
z = ++p;
/* get only the digits */
while (isdigit((int) *p)) {
/*
* uri = scheme://user:password@host:port/path
* p = ^
* z = ^
*/
e = (char **) &p;
p++;
}
if (port != NULL) {
*port = strtoul(z, e, 0);
}
/*
* uri = scheme://user:password@host:port/path
* p = ^
* z = ^
*/
z = p;
}
}
if (*p == '\0') {
return 0;
}
/* get the path with the leading slash */
if (*p == '/') {
if (path != NULL) {
*path = c_strdup(p);
}
return 0;
}
return -1;
}

28
src/std/c_path.h
View file

@ -1,7 +1,7 @@
/*
* cynapses libc functions
*
* Copyright (c) 2008 by Andreas Schneider <mail@cynapses.org>
* Copyright (c) 2007-2008 by Andreas Schneider <mail@cynapses.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -54,7 +54,7 @@
char *c_dirname(const char *path);
/**
* @brief dirname - parse filename component.
* @brief basename - parse filename component.
*
* basename breaks a null-terminated pathname string into a filename component.
* c_basename() returns the component following the final '/'. Trailing '/'
@ -68,6 +68,30 @@ char *c_dirname(const char *path);
*/
char *c_basename (const char *path);
/**
* @brief parse a uri and split it into components.
*
* parse_uri parses an uri in the format
*
* [<scheme>:][//[<user>[:<password>]@]<host>[:<port>]]/[<path>]
*
* into its compoments. If you only want a special component,
* pass NULL for all other components. All components will be allocated if they have
* been found.
*
* @param uri The uri to parse.
* @param scheme String for the scheme component
* @param user String for the username component
* @param passwd String for the password component
* @param host String for the password component
* @param port Integer for the port
* @param path String for the path component with a leading slash.
*
* @return 0 on success, < 0 on error.
*/
int c_parse_uri(const char *uri, char **scheme, char **user, char **passwd,
char **host, unsigned int *port, char **path);
/**
* }@
*/