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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "libldetect.h"
#include "libldetect-private.h"
#include "common.h"
typedef struct {
FILE *f;
enum { fh_normal, fh_pipe } type;
} fh;
static fh fh_open(char *fname) {
fh ret;
int length = strlen(fname);
char *fname_gz = alloca(length + sizeof(".gz"));
sprintf(fname_gz, "%s.gz", fname);
if (access(fname, R_OK) == 0) {
ret.f = fopen(fname, "r");
ret.type = fh_normal;
} else if (access(fname_gz, R_OK) == 0) {
char *cmd = alloca(sizeof("gzip -dc %s") + strlen(fname_gz));
sprintf(cmd, "gzip -dc %s", fname_gz);
ret.f = popen(cmd, "r");
ret.type = fh_pipe;
} else {
fprintf(stderr, "Missing pciusbtable (should be %s)\n", fname);
exit(1);
}
return ret;
}
static void fh_close(fh f) {
switch (f.type)
{
case fh_normal: fclose(f.f); break;
case fh_pipe: pclose(f.f); break;
}
}
extern int pciusb_find_modules(struct pciusb_entries entries, const char *fpciusbtable, int no_subid) {
fh f;
char buf[2048];
int line;
char *share_path = getenv("SHARE_PATH");
char *fname;
if (!share_path || !*share_path) share_path = "/usr/share";
fname = alloca(strlen(share_path) + sizeof("/ldetect-lst/") + strlen(fpciusbtable));
sprintf(fname, "%s/ldetect-lst/%s", share_path, fpciusbtable);
f = fh_open(fname);
for (line = 1; fgets(buf, sizeof(buf) - 1, f.f); line++) {
unsigned short vendor, device, subvendor, subdevice;
int offset, i;
int nb = sscanf(buf, "0x%hx\t0x%hx\t0x%hx\t0x%hx\t%n", &vendor, &device, &subvendor, &subdevice, &offset);
if (nb != 4) {
nb = sscanf(buf, "0x%hx\t0x%hx\t%n", &vendor, &device, &offset);
if (nb != 2) {
if (buf[0] != '#') fprintf(stderr, "%s %d: bad line\n", fpciusbtable, line);
continue;
}
}
for (i = 0; i < entries.nb; i++) {
struct pciusb_entry *e = &entries.entries[i];
if (vendor == e->vendor && device == e->device) {
if (nb == 4 && e->subvendor == 0xffff && e->subdevice == 0xffff && !no_subid) {
pciusb_free(entries);
fh_close(f);
return 0; /* leave, let the caller call again with subids */
}
if ((nb != 4 || (subvendor == e->subvendor && subdevice == e->subdevice)) && !e->module) {
char *p = buf + offset + 1;
char *q = strchr(p, '\t');
if (q) {
q[-1] = 0;
q[strlen(q)-2] = 0;
ifree(e->module); ifree(e->text);
e->module = strcmp(p, "unknown") ? strdup(p) : NULL;
e->text = strdup(q+2);
}
}
}
}
}
fh_close(f);
return 1;
}
extern void pciusb_initialize(struct pciusb_entry *e) {
e->vendor = 0xffff;
e->device = 0xffff;
e->subvendor = 0xffff;
e->subdevice = 0xffff;
e->class = 0;
e->pci_bus = 0xffff;
e->pci_device = 0xffff;
e->pci_function = 0xffff;
e->module = NULL;
e->text = NULL;
}
extern void pciusb_free(struct pciusb_entries entries) {
int i;
for (i = 0; i < entries.nb; i++) {
struct pciusb_entry e = entries.entries[i];
ifree(e.module);
ifree(e.text);
}
ifree(entries.entries);
}
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