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Add HTTP Basic auth support

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This commit is contained in:
Julien BLACHE 2009-05-01 20:58:15 +02:00
parent cd636cf42d
commit dc68de86dd
2 changed files with 109 additions and 0 deletions
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106
src/httpd.c
View File

@ -691,6 +691,112 @@ exit_cb(int fd, short event, void *arg)
httpd_exit = 1; httpd_exit = 1;
} }
static char *http_reply_401 = "<html><head><title>401 Unauthorized</title></head><body>Authorization required</body></html>";
int
httpd_basic_auth(struct evhttp_request *req, char *user, char *passwd, char *realm)
{
struct evbuffer *evbuf;
char *header;
const char *auth;
char *authuser;
char *authpwd;
int len;
int ret;
auth = evhttp_find_header(req->input_headers, "Authorization");
if (!auth)
{
DPRINTF(E_DBG, L_HTTPD, "No Authorization header\n");
goto need_auth;
}
if (strncmp(auth, "Basic ", strlen("Basic ")) != 0)
{
DPRINTF(E_LOG, L_HTTPD, "Bad Authentication header\n");
goto need_auth;
}
auth += strlen("Basic ");
authuser = b64_decode(auth);
if (!authuser)
{
DPRINTF(E_LOG, L_HTTPD, "Could not decode Authentication header\n");
goto need_auth;
}
authpwd = strchr(authuser, ':');
if (!authpwd)
{
DPRINTF(E_LOG, L_HTTPD, "Malformed Authentication header\n");
free(authuser);
goto need_auth;
}
*authpwd = '\0';
authpwd++;
if (user)
{
if (strcmp(user, authuser) != 0)
{
DPRINTF(E_LOG, L_HTTPD, "Username mismatch\n");
free(authuser);
goto need_auth;
}
}
if (strcmp(passwd, authpwd) != 0)
{
DPRINTF(E_LOG, L_HTTPD, "Bad password\n");
free(authuser);
goto need_auth;
}
free(authuser);
return 0;
need_auth:
len = strlen(realm) + strlen("Basic realm=") + 3;
header = (char *)malloc(len);
if (!header)
{
evhttp_send_error(req, HTTP_SERVUNAVAIL, "Internal Server Error");
return -1;
}
ret = snprintf(header, len, "Basic realm=\"%s\"", realm);
if ((ret < 0) || (ret >= len))
{
evhttp_send_error(req, HTTP_SERVUNAVAIL, "Internal Server Error");
return -1;
}
evbuf = evbuffer_new();
if (!evbuf)
{
evhttp_send_error(req, HTTP_SERVUNAVAIL, "Internal Server Error");
return -1;
}
evhttp_add_header(req->output_headers, "WWW-Authenticate", header);
evbuffer_add(evbuf, http_reply_401, strlen(http_reply_401));
evhttp_send_reply(req, 401, "Unauthorized", evbuf);
free(header);
evbuffer_free(evbuf);
return -1;
}
/* Thread: main */ /* Thread: main */
int int
httpd_init(void) httpd_init(void)

3
src/httpd.h
View File

@ -9,6 +9,9 @@
void void
httpd_stream_file(struct evhttp_request *req, int id); httpd_stream_file(struct evhttp_request *req, int id);
int
httpd_basic_auth(struct evhttp_request *req, char *user, char *passwd, char *realm);
int int
httpd_init(void); httpd_init(void);