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support checkra1n clones being passed into -i

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This commit is contained in:
Nick Chan committed 2023-03-08 16:49:18 +08:00
1 parent d974100585
commit 2a7df193ce
7 files changed
+112 -4
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src/optparse.c
+32 -1
View File
@@ -9,8 +9,10 @@
#include <ctype.h>
#include <assert.h>
#include <getopt.h>
#include <limits.h>
#include <errno.h>
#include <palerain.h>
#include <sys/mman.h>
checkrain_option_t host_flags = 0;
checkrain_option_p host_flags_p = &host_flags;
@@ -211,7 +213,36 @@ int optparse(int argc, char* argv[]) {
} else if (!(st.st_mode & S_IXUSR) && !(st.st_mode & S_IXGRP) && !(st.st_mode & S_IXOTH)) {
LOG(LOG_FATAL, "%s is not executable", optarg);
return -1;
};
} else if (!(st.st_mode & S_IFREG)) {
LOG(LOG_FATAL, "%s is not a regular file", optarg);
return -1;
}
if (st.st_size < (UCHAR_MAX+1)) {
LOG(LOG_FATAL, "%s too small", optarg);
return -1;
}
int checkra1n_fd = open(optarg, O_RDONLY);
if (checkra1n_fd == -1) {
LOG(LOG_FATAL, "Cannot open %s: %d (%s)", optarg, errno, strerror(errno));
return -1;
}
void* addr = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, checkra1n_fd, 0);
if (addr == MAP_FAILED) {
LOG(LOG_ERROR, "Failed to map file %s: %d (%s)", optarg, errno, strerror(errno));
return -1;
}
if (boyermoore_horspool_memmem(addr, st.st_size, (const unsigned char*)"[ra1npoc15-part] thanks to", strlen("[ra1npoc15-part] thanks to")) != NULL)
{
host_flags |= palerain_option_checkrain_is_clone;
LOG(LOG_VERBOSE3, "%s is checkra1n clone", optarg);
}
else
{
host_flags &= ~palerain_option_checkrain_is_clone;
LOG(LOG_VERBOSE3, "%s is checkra1n", optarg);
}
munmap(addr, st.st_size);
close(checkra1n_fd);
ext_checkra1n = calloc(1, strlen(optarg) + 1);
snprintf(ext_checkra1n, strlen(optarg) + 1, "%s", optarg);
break;