root/openpgpsdk/trunk/examples/verify.c

#include <openpgpsdk/packet.h>
#include <openpgpsdk/packet-parse.h>
#include <openpgpsdk/util.h>
#include <openpgpsdk/accumulate.h>
#include <openpgpsdk/keyring.h>
#include <openpgpsdk/validate.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>

#include <openpgpsdk/final.h>

int main(int argc,char **argv)
    {
    ops_parse_info_t *pinfo;
    ops_keyring_t keyring;
    const char *target;
    int fd;
    ops_validate_result_t result;

    if(argc != 2)
        {
        fprintf(stderr,"%s <file to verify>\n",argv[0]);
        exit(1);
        }

    target=argv[1];

    ops_init();

    memset(&keyring,'\0',sizeof keyring);

    pinfo=ops_parse_info_new();

    if(!strcmp(target,"-"))
        fd=0;
    else
        {
        fd=open(target,O_RDONLY);
        if(fd < 0)
            {
            perror(target);
            exit(2);
            }
        }

    ops_reader_set_fd(pinfo,fd);

    ops_parse_and_accumulate(&keyring,pinfo);

    ops_dump_keyring(&keyring);

    ops_validate_all_signatures(&result,&keyring);

    ops_keyring_free(&keyring);

    ops_parse_info_delete(pinfo);

    ops_finish();

    printf("valid signatures   = %d\n",result.valid_count);
    printf("invalid signatures = %d\n",result.invalid_count);
    printf("unknown signer     = %d\n",result.unknown_signer_count);

    if(result.invalid_count)
        return 1;

    return 0;
    }