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