49 lines
1.0 KiB
C
49 lines
1.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <arpa/inet.h>
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#include "plugin.h"
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#include "netpkt.h"
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struct net_pkt * pkt_factory(char *dstip, unsigned int dstport, char *buf, unsigned int size) {
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struct net_pkt *pkt;
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if (!(pkt = malloc(sizeof(struct net_pkt) + size)))
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return NULL;
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INIT_LIST_HEAD(&pkt->list);
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pkt->addr.sin_family = AF_INET;
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pkt->addr.sin_port = htons(dstport);
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if (dstip)
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inet_aton(dstip, &pkt->addr.sin_addr);
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else
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inet_aton("255.255.255.255", &pkt->addr.sin_addr);
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pkt->size = size;
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memcpy(pkt->buf, buf, size);
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return pkt;
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}
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int pkt_memcmp(struct net_pkt *pkt, unsigned int offset, char *search, unsigned int size) {
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if (offset >= pkt->size)
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return 1;
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if (offset + size >= pkt->size)
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size = pkt->size - offset;
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return memcmp(pkt->buf, search, size);
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}
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int pkt_strcmp(struct net_pkt *pkt, unsigned int offset, char *search) {
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return pkt_memcmp(pkt, offset, search, strlen(search));
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}
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