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Add DynamicACL support for FFserver.

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Originally committed as revision 22815 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Benjamin Larsson
2010-04-07 20:06:02 +00:00
parent c6cf6ae69d
commit 58f48adb51
1 changed files with 142 additions and 57 deletions
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199
ffserver.c
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@@ -204,6 +204,7 @@ typedef struct FFStream {
AVInputFormat *ifmt; /* if non NULL, force input format */
AVOutputFormat *fmt;
IPAddressACL *acl;
char dynamic_acl[1024];
int nb_streams;
int prebuffer; /* Number of millseconds early to start */
int64_t max_time; /* Number of milliseconds to run */
@@ -1257,14 +1258,129 @@ static void get_arg(char *buf, int buf_size, const char **pp)
*pp = p;
}
static int validate_acl(FFStream *stream, HTTPContext *c)
static void parse_acl_row(FFStream *stream, FFStream* feed, IPAddressACL *ext_acl,
const char *p, const char *filename, int line_num)
{
char arg[1024];
IPAddressACL acl;
int errors = 0;
get_arg(arg, sizeof(arg), &p);
if (strcasecmp(arg, "allow") == 0)
acl.action = IP_ALLOW;
else if (strcasecmp(arg, "deny") == 0)
acl.action = IP_DENY;
else {
fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n",
filename, line_num, arg);
errors++;
}
get_arg(arg, sizeof(arg), &p);
if (resolve_host(&acl.first, arg) != 0) {
fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
filename, line_num, arg);
errors++;
} else
acl.last = acl.first;
get_arg(arg, sizeof(arg), &p);
if (arg[0]) {
if (resolve_host(&acl.last, arg) != 0) {
fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
filename, line_num, arg);
errors++;
}
}
if (!errors) {
IPAddressACL *nacl = av_mallocz(sizeof(*nacl));
IPAddressACL **naclp = 0;
acl.next = 0;
*nacl = acl;
if (stream)
naclp = &stream->acl;
else if (feed)
naclp = &feed->acl;
else if (ext_acl)
naclp = &ext_acl;
else {
fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n",
filename, line_num);
errors++;
}
if (naclp) {
while (*naclp)
naclp = &(*naclp)->next;
*naclp = nacl;
}
}
}
static IPAddressACL* parse_dynamic_acl(FFStream *stream, HTTPContext *c)
{
FILE* f;
char line[1024];
char cmd[1024];
IPAddressACL *acl = NULL;
int line_num = 0;
const char *p;
f = fopen(stream->dynamic_acl, "r");
if (!f) {
perror(stream->dynamic_acl);
return NULL;
}
acl = av_mallocz(sizeof(IPAddressACL));
/* Build ACL */
for(;;) {
if (fgets(line, sizeof(line), f) == NULL)
break;
line_num++;
p = line;
while (isspace(*p))
p++;
if (*p == '\0' || *p == '#')
continue;
get_arg(cmd, sizeof(cmd), &p);
if (!strcasecmp(cmd, "ACL"))
parse_acl_row(NULL, NULL, acl, p, stream->dynamic_acl, line_num);
}
fclose(f);
return acl;
}
static void free_acl_list(IPAddressACL *in_acl)
{
IPAddressACL *pacl,*pacl2;
pacl = in_acl;
while(pacl) {
pacl2 = pacl;
pacl = pacl->next;
av_freep(pacl2);
}
}
static int validate_acl_list(IPAddressACL *in_acl, HTTPContext *c)
{
enum IPAddressAction last_action = IP_DENY;
IPAddressACL *acl;
struct in_addr *src = &c->from_addr.sin_addr;
unsigned long src_addr = src->s_addr;
for (acl = stream->acl; acl; acl = acl->next) {
for (acl = in_acl; acl; acl = acl->next) {
if (src_addr >= acl->first.s_addr && src_addr <= acl->last.s_addr)
return (acl->action == IP_ALLOW) ? 1 : 0;
last_action = acl->action;
@@ -1274,6 +1390,26 @@ static int validate_acl(FFStream *stream, HTTPContext *c)
return (last_action == IP_DENY) ? 1 : 0;
}
static int validate_acl(FFStream *stream, HTTPContext *c)
{
int ret = 0;
IPAddressACL *acl;
/* if stream->acl is null validate_acl_list will return 1 */
ret = validate_acl_list(stream->acl, c);
if (stream->dynamic_acl[0]) {
acl = parse_dynamic_acl(stream, c);
ret = validate_acl_list(acl, c);
free_acl_list(acl);
}
return ret;
}
/* compute the real filename of a file by matching it without its
extensions to all the stream filenames */
static void compute_real_filename(char *filename, int max_size)
@@ -4345,61 +4481,10 @@ static int parse_ffconfig(const char *filename)
} else if (!strcasecmp(cmd, "NoAudio")) {
audio_id = CODEC_ID_NONE;
} else if (!strcasecmp(cmd, "ACL")) {
IPAddressACL acl;
get_arg(arg, sizeof(arg), &p);
if (strcasecmp(arg, "allow") == 0)
acl.action = IP_ALLOW;
else if (strcasecmp(arg, "deny") == 0)
acl.action = IP_DENY;
else {
fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n",
filename, line_num, arg);
errors++;
}
get_arg(arg, sizeof(arg), &p);
if (resolve_host(&acl.first, arg) != 0) {
fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
filename, line_num, arg);
errors++;
} else
acl.last = acl.first;
get_arg(arg, sizeof(arg), &p);
if (arg[0]) {
if (resolve_host(&acl.last, arg) != 0) {
fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
filename, line_num, arg);
errors++;
}
}
if (!errors) {
IPAddressACL *nacl = av_mallocz(sizeof(*nacl));
IPAddressACL **naclp = 0;
acl.next = 0;
*nacl = acl;
if (stream)
naclp = &stream->acl;
else if (feed)
naclp = &feed->acl;
else {
fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n",
filename, line_num);
errors++;
}
if (naclp) {
while (*naclp)
naclp = &(*naclp)->next;
*naclp = nacl;
}
parse_acl_row(stream, feed, NULL, p, filename, line_num);
} else if (!strcasecmp(cmd, "DynamicACL")) {
if (stream) {
get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), &p);
}
} else if (!strcasecmp(cmd, "RTSPOption")) {
get_arg(arg, sizeof(arg), &p);