diff options
Diffstat (limited to 'sys/netinet/libalias/alias_smedia.c')
| -rw-r--r-- | sys/netinet/libalias/alias_smedia.c | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/sys/netinet/libalias/alias_smedia.c b/sys/netinet/libalias/alias_smedia.c index 027a724..a3ba7ae 100644 --- a/sys/netinet/libalias/alias_smedia.c +++ b/sys/netinet/libalias/alias_smedia.c @@ -70,17 +70,17 @@ __FBSDID("$FreeBSD$"); Alias_smedia.c is meant to contain the aliasing code for streaming media protocols. It performs special processing for RSTP sessions under TCP. Specifically, when a SETUP request is sent by a client, or a 200 reply - is sent by a server, it is intercepted and modified. The address is + is sent by a server, it is intercepted and modified. The address is changed to the gateway machine and an aliasing port is used. - More specifically, the "client_port" configuration parameter is - parsed for SETUP requests. The "server_port" configuration parameter is + More specifically, the "client_port" configuration parameter is + parsed for SETUP requests. The "server_port" configuration parameter is parsed for 200 replies eminating from a server. This is intended to handle the unicast case. RTSP also allows a redirection of a stream to another client by using the "destination" configuration parameter. The destination config parm would - indicate a different IP address. This function is NOT supported by the + indicate a different IP address. This function is NOT supported by the RTSP translation code below. The RTSP multicast functions without any address translation intervention. @@ -95,7 +95,7 @@ __FBSDID("$FreeBSD$"); changes of sequence and acknowledgment numbers, since the client machine is totally unaware of the modification to the TCP stream. - Initial version: May, 2000 (eds) + Initial version: May, 2000 (eds) */ #include <stdio.h> @@ -109,8 +109,8 @@ __FBSDID("$FreeBSD$"); #include "alias_local.h" -#define RTSP_CONTROL_PORT_NUMBER_1 554 -#define RTSP_CONTROL_PORT_NUMBER_2 7070 +#define RTSP_CONTROL_PORT_NUMBER_1 554 +#define RTSP_CONTROL_PORT_NUMBER_2 7070 #define RTSP_PORT_GROUP 2 #define ISDIGIT(a) (((a) >= '0') && ((a) <= '9')) @@ -152,7 +152,7 @@ alias_rtsp_out(struct ip *pip, char newdata[2048], *port_data, *port_newdata, stemp[80]; int links_created = 0, pkt_updated = 0; struct alias_link *rtsp_link = NULL; - struct in_addr null_addr; + struct in_addr null_addr; /* Calculate data length of TCP packet */ tc = (struct tcphdr *) ((char *) pip + (pip->ip_hl << 2)); @@ -217,15 +217,15 @@ alias_rtsp_out(struct ip *pip, if (!links_created) { - links_created = 1; + links_created = 1; /* Find an even numbered port number base that satisfies the contiguous number of ports we need */ null_addr.s_addr = 0; if (0 == (salias = FindNewPortGroup(null_addr, FindAliasAddress(pip->ip_src), - sport, 0, - RTSP_PORT_GROUP, - IPPROTO_UDP, 1))) { + sport, 0, + RTSP_PORT_GROUP, + IPPROTO_UDP, 1))) { #ifdef DEBUG fprintf(stderr, "PacketAlias/RTSP: Cannot find contiguous RTSP data ports\n"); @@ -361,7 +361,7 @@ alias_pna_out(struct ip *pip, } work += ntohs(msg_len); } - + return 0; } @@ -385,8 +385,8 @@ AliasHandleRtspOut(struct ip *pip, struct alias_link *link, int maxpacketsize) data += hlen; /* When aliasing a client, check for the SETUP request */ - if ((ntohs(tc->th_dport) == RTSP_CONTROL_PORT_NUMBER_1) || - (ntohs(tc->th_dport) == RTSP_CONTROL_PORT_NUMBER_2)) { + if ((ntohs(tc->th_dport) == RTSP_CONTROL_PORT_NUMBER_1) || + (ntohs(tc->th_dport) == RTSP_CONTROL_PORT_NUMBER_2)) { if (dlen >= strlen(setup)) { if (memcmp(data, setup, strlen(setup)) == 0) { @@ -407,23 +407,23 @@ AliasHandleRtspOut(struct ip *pip, struct alias_link *link, int maxpacketsize) if (dlen >= strlen(str200)) { - for (parseOk = 0, i = 0; - i <= dlen - strlen(str200); + for (parseOk = 0, i = 0; + i <= dlen - strlen(str200); i++) { - if (memcmp(&data[i], str200, strlen(str200)) == 0) { - parseOk = 1; + if (memcmp(&data[i], str200, strlen(str200)) == 0) { + parseOk = 1; break; } } - if (parseOk) { + if (parseOk) { - i += strlen(str200); /* skip string found */ + i += strlen(str200); /* skip string found */ while(data[i] == ' ') /* skip blank(s) */ i++; - + if ((dlen - i) >= strlen(okstr)) { - if (memcmp(&data[i], okstr, strlen(okstr)) == 0) + if (memcmp(&data[i], okstr, strlen(okstr)) == 0) alias_rtsp_out(pip, link, data, server_port_str); } |
