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#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
#include <errno.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <perk/perk.h>
#include "perk_impl.h"
static int perk_parse_opts(struct perk_ctx * ctx)
{
int i;
char * ch;
const char ** popt;
for (i=1; i<ctx->argc; i++) {
ch = ctx->argv[i];
if (*ch == '-') {
switch (*++ch) {
case 'i':
popt = &ctx->fname;
break;
case 'h':
ctx->flags = PERK_HELP;
return 0;
default:
ctx->status = PERK_BAD_OPT;
return ctx->status;
}
while ((*++ch == '\t') || (*ch == ' '));
if (!*ch) {
if (++i < ctx->argc)
*popt = ctx->argv[i];
else
ctx->status = PERK_BAD_OPT_VAL;
} else
*popt = ch;
} else if (!ctx->fname)
ctx->fname = ch;
else
ctx->status = PERK_BAD_OPT;
}
return ctx->status;
}
static int perk_map_input(struct perk_ctx * ctx)
{
ctx->fd = open(ctx->fname,O_RDONLY | O_CLOEXEC);
if (ctx->fd < 0) {
ctx->status = PERK_IO_ERROR;
return ctx->status;
}
ctx->status = pe_map_raw_image(ctx->fd,0,PROT_READ,&ctx->map);
return ctx->status;
}
static int perk_exit(struct perk_ctx * ctx)
{
if (ctx->map.addr)
pe_unmap_raw_image(&ctx->map);
return ctx->status;
}
static int perk_run(struct perk_ctx * ctx)
{
struct pe_image_meta * meta;
if (perk_map_input(ctx))
return perk_exit(ctx);
if ((ctx->status = pe_get_image_meta(&ctx->map,&meta)))
return perk_exit(ctx);
/* pre-alpha default output */
pe_output_export_symbols(
meta,
PERK_OUTPUT_FORMAT_LIST | PERK_OUTPUT_FIELD_NAME,
stdout);
ctx->status = pe_free_image_meta(meta);
return perk_exit(ctx);
}
static int perk_main(int argc, char * argv[], char * envp[])
{
struct perk_ctx ctx = {argc,argv,envp};
if (perk_parse_opts(&ctx))
return ctx.status;
else
return perk_run(&ctx);
}
#ifdef PERK_APP
__typeof(perk_main) main __attribute__((alias("perk_main")));
#endif
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