diff --git a/src/Makefile.mingw b/src/Makefile.mingw index 1a6f76df5..83987d9c4 100644 --- a/src/Makefile.mingw +++ b/src/Makefile.mingw @@ -8,7 +8,7 @@ # # Modified Makefile for Win32 (MinGW32) environment. # -# Version: @(#)Makefile.mingw 1.0.23 2017/06/03 +# Version: @(#)Makefile.mingw 1.0.24 2017/06/04 # # Authors: Miran Grca, # Fred N. van Kempen, @@ -249,17 +249,14 @@ all: $(PROG).exe pcap_if.exe $(PROG).exe: $(OBJ) $(LZFOBJ) $(SLIRPOBJ) @echo Linking $(PROG).exe .. - @$(CC) -o $(PROG).exe \ - $(OBJ) $(LZFOBJ) $(SLIRPOBJ) \ - $(LIBS) #-static -Lpcap -lwpcapdelay + @$(CC) -o $(PROG).exe $(OBJ) $(LZFOBJ) $(SLIRPOBJ) $(LIBS) ifneq ($(DEBUG), y) @strip $(PROG).exe endif -pcap_if.exe: pcap_if.o pcap_if.res +pcap_if.exe: pcap_if.o win_dynld.o pcap_if.res @echo Linking pcap_if.exe .. - @$(CC) -o pcap_if.exe \ - pcap_if.o pcap_if.res -static -Lpcap -lwpcapdelay + @$(CC) -o pcap_if.exe pcap_if.o win_dynld.o pcap_if.res ifneq ($(DEBUG), y) @strip pcap_if.exe endif diff --git a/src/pcap/libwpcapdelay.a b/src/pcap/libwpcapdelay.a deleted file mode 100644 index c9d175845..000000000 Binary files a/src/pcap/libwpcapdelay.a and /dev/null differ diff --git a/src/pcap_if.c b/src/pcap_if.c index 588ee01e8..3cf321a9d 100644 --- a/src/pcap_if.c +++ b/src/pcap_if.c @@ -10,14 +10,35 @@ * * Based on the "libpcap" examples. * - * Version: @(#)pcap_if.c 1.0.2 2017/05/09 + * Version: @(#)pcap_if.c 1.0.3 2017/06/04 * * Author: Fred N. van Kempen, */ #include #include +#include #include #include +#include "plat_dynld.h" + + +static void *pcap_handle; /* handle to WinPcap DLL */ + + +/* Pointers to the real functions. */ +static int (*f_pcap_findalldevs)(pcap_if_t **,char *); +static void (*f_pcap_freealldevs)(pcap_if_t *); +static pcap_t *(*f_pcap_open_live)(const char *,int,int,int,char *); +static int (*f_pcap_next_ex)(pcap_t*,struct pcap_pkthdr**,const unsigned char**); +static void (*f_pcap_close)(pcap_t *); +static dllimp_t pcap_imports[] = { + { "pcap_findalldevs", &f_pcap_findalldevs }, + { "pcap_freealldevs", &f_pcap_freealldevs }, + { "pcap_open_live", &f_pcap_open_live }, + { "pcap_next_ex", &f_pcap_next_ex }, + { "pcap_close", &f_pcap_close }, + { NULL, NULL }, +}; typedef struct { @@ -35,7 +56,7 @@ get_devlist(dev_t *list) int i = 0; /* Retrieve the device list from the local machine */ - if (pcap_findalldevs(&devlist, errbuf) == -1) { + if (f_pcap_findalldevs(&devlist, errbuf) == -1) { fprintf(stderr,"Error in pcap_findalldevs_ex: %s\n", errbuf); return(-1); } @@ -51,7 +72,7 @@ get_devlist(dev_t *list) } /* Release the memory. */ - pcap_freealldevs(devlist); + f_pcap_freealldevs(devlist); return(i); } @@ -130,11 +151,11 @@ start_cap(char *dev) int rc; /* Open the device for reading from it. */ - pcap = pcap_open_live(dev, - 1518, /* MTU */ - 1, /* promisc mode */ - 10, /* timeout */ - temp); + pcap = f_pcap_open_live(dev, + 1518, /* MTU */ + 1, /* promisc mode */ + 10, /* timeout */ + temp); if (pcap == NULL) { fprintf(stderr, "Pcap: open_live(%s): %s\n", dev, temp); return(2); @@ -142,7 +163,7 @@ start_cap(char *dev) printf("Listening on '%s'..\n", dev); for (;;) { - rc = pcap_next_ex(pcap, &hdr, &pkt); + rc = f_pcap_next_ex(pcap, &hdr, &pkt); if (rc < 0) break; /* Did we time out? */ @@ -161,7 +182,7 @@ start_cap(char *dev) } /* All done, close up. */ - pcap_close(pcap); + f_pcap_close(pcap); return(0); } @@ -191,6 +212,17 @@ show_devs(dev_t *list, int num) } +void +pclog(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); +} + + int main(int argc, char **argv) { @@ -198,6 +230,13 @@ main(int argc, char **argv) dev_t *dev = interfaces; int numdev, i; + /* Try loading the DLL. */ + pcap_handle = dynld_module("wpcap.dll", pcap_imports); + if (pcap_handle == NULL) { + fprintf(stderr, "Unable to load WinPcap DLL !\n"); + return(1); + } + /* Get the list. */ numdev = get_devlist(interfaces); @@ -205,6 +244,8 @@ main(int argc, char **argv) /* No arguments, just show the list. */ show_devs(interfaces, numdev); + dynld_close(pcap_handle); + return(numdev); } @@ -213,11 +254,15 @@ main(int argc, char **argv) if (i < 0 || i > numdev) { fprintf(stderr, "Invalid interface number %d !\n", i); + dynld_close(pcap_handle); + return(1); } /* Looks good, go and listen.. */ i = start_cap(interfaces[i-1].device); + dynld_close(pcap_handle); + return(i); }