darshan-convert.c 8.1 KB
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/*
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Kevin Harms committed
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 *  (C) 2011 by Argonne National Laboratory.
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 *      See COPYRIGHT in top-level directory.
 */

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <zlib.h>
#include <time.h>
#include <stdlib.h>
#include <getopt.h>
#include <assert.h>
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#include <errno.h>
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#include "darshan-logutils.h"

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extern uint32_t darshan_hashlittle(const void *key, size_t length, uint32_t initval);
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int usage (char *exename)
{
    fprintf(stderr, "Usage: %s [options] <infile> <outfile>\n", exename);
    fprintf(stderr, "       Converts darshan log from infile to outfile.\n");
    fprintf(stderr, "       rewrites the log file into the newest format.\n");
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    fprintf(stderr, "       --obfuscate Obfuscate items in the log.\n");
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    fprintf(stderr, "       --key <key> Key to use when obfuscating.\n");
    fprintf(stderr, "       --annotate <string> Additional metadata to add.\n");
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    fprintf(stderr, "       --file <hash> Limit output to specified (hashed) file only.\n");
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    exit(1);
}

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void parse_args (int argc, char **argv, char **infile, char **outfile,
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                 int *obfuscate, int *key, char **annotate, uint64_t* hash)
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{
    int index;
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    int ret;

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    static struct option long_opts[] =
    {
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        {"annotate", 1, NULL, 'a'},
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        {"obfuscate", 0, NULL, 'o'},
        {"key", 1, NULL, 'k'},
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        {"file", 1, NULL, 'f'},
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        {"help",  0, NULL, 0},
        { 0, 0, 0, 0 }
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    };

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    *hash = 0;

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    while(1)
    {
        int c = getopt_long(argc, argv, "", long_opts, &index);

        if (c == -1) break;

        switch(c)
        {
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            case 'a':
                *annotate = optarg;
                break;
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            case 'o':
                *obfuscate = 1;
                break;
            case 'k':
                *key = atoi(optarg);
                break;
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            case 'f':
                ret = sscanf(optarg, "%" PRIu64, hash);
                if(ret != 1)
                    usage(argv[0]);
                break;
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            case 0:
            case '?':
            default:
                usage(argv[0]);
                break;
        }
    }

    if (optind + 2 == argc)
    {
        *infile = argv[optind];
        *outfile = argv[optind+1];
    }
    else
    {
        usage(argv[0]);
    }

    return;
}

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void obfuscate_job(int key, struct darshan_job *job)
{
    job->uid   = (int64_t) darshan_hashlittle(&job->uid, sizeof(job->uid), key);
    if (job->jobid != 0)
    {
        job->jobid = (int64_t) darshan_hashlittle(&job->jobid, sizeof(job->jobid), key);
    }

    return;
}

void obfuscate_exe(int key, char *exe)
{
    uint32_t hashed;

    hashed = darshan_hashlittle(exe, strlen(exe), key);
    memset(exe, 0, strlen(exe));
    sprintf(exe, "%u", hashed);

    return;
}

void obfuscate_file(int key, struct darshan_file *file)
{
    uint32_t hashed;

    hashed = darshan_hashlittle(file->name_suffix, sizeof(file->name_suffix), key);
    memset(file->name_suffix, 0, sizeof(file->name_suffix));
    sprintf(file->name_suffix, "%u", hashed);

    return;
}

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void add_annotation (char *annotation,
                     struct darshan_job *job)
{
    char *token;
    char *save;
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    int len;
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    /* check for newline in existing metadata, insert if needed */
    len = strlen(job->metadata);
    if(len > 0 && len < sizeof(job->metadata))
    {
        if(job->metadata[len-1] != '\n')
        {
            job->metadata[len] = '\n';
            job->metadata[len+1] = '\0';
        }
    }

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    /* determine remaining space in metadata string */
    int remaining = sizeof(job->metadata) - strlen(job->metadata);
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    for(token=strtok_r(annotation, "\t", &save);
        token != NULL;
        token=strtok_r(NULL, "\t", &save))
    {
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        if ((strlen(token)+1) < remaining)
        {
            strcat(job->metadata, token);
            strcat(job->metadata, "\n");
            remaining -= (strlen(token)+1);
        }
        else
        {
            fprintf(stderr,
                    "not enough space left in metadata for: current=%s token=%s (remain=%d:need=%d)\n",
                    job->metadata, token, remaining-1, strlen(token)+1);
        }
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    }

    return;
}

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int main(int argc, char **argv)
{
    int ret;
    char *infile_name;
    char *outfile_name;
    struct darshan_job job;
    struct darshan_file cp_file;
    char tmp_string[1024];
    darshan_fd infile;
    darshan_fd outfile;
    int i;
    int mount_count;
    int64_t* devs;
    char** mnt_pts;
    char** fs_types;
    int last_rank = 0;
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    int obfuscate = 0;
    int key = 0;
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    char *annotation = NULL;
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    uint64_t hash;
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    parse_args(argc, argv, &infile_name, &outfile_name, &obfuscate, &key, &annotation, &hash);
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    infile = darshan_log_open(infile_name, "r");
    if(!infile)
    {
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        fprintf(stderr, "darshan_log_open() failed to open %s\n.", infile_name);
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        return(-1);
    }
 
    /* TODO: safety check that outfile_name doesn't exist; we don't want to
     * overwrite something by accident.
     */
    outfile = darshan_log_open(outfile_name, "w");
    if(!outfile)
    {
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        fprintf(stderr, "darshan_log_open() failed to open %s\n.", outfile_name);
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        return(-1);
    }

    /* TODO: for now this tool is just reading the input file and throwing
     * away the data.  Need to write the log_put*() functions and use this
     * program as a test harness
     */
  
    /* read job info */
    ret = darshan_log_getjob(infile, &job);
    if(ret < 0)
    {
        fprintf(stderr, "Error: unable to read job information from log file.\n");
        darshan_log_close(infile);
        return(-1);
    }

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    if (obfuscate) obfuscate_job(key, &job);
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    if (annotation) add_annotation(annotation, &job);
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    ret = darshan_log_putjob(outfile, &job);
    if (ret < 0)
    {
        fprintf(stderr, "Error: unable to write job information to log file.\n");
        darshan_log_close(outfile);
        return(-1);
    }

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    ret = darshan_log_getexe(infile, tmp_string);
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    if(ret < 0)
    {
        fprintf(stderr, "Error: unable to read trailing job information.\n");
        darshan_log_close(infile);
        return(-1);
    }
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    if (obfuscate) obfuscate_exe(key, tmp_string);

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    ret = darshan_log_putexe(outfile, tmp_string);
    if(ret < 0)
    {
        fprintf(stderr, "Error: unable to write trailing job information.\n");
        darshan_log_close(outfile);
        return(-1);
    }
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    ret = darshan_log_getmounts(infile, &devs, &mnt_pts, &fs_types, &mount_count);
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    if(ret < 0)
    {
        fprintf(stderr, "Error: unable to read trailing job information.\n");
        darshan_log_close(infile);
        return(-1);
    }

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    ret = darshan_log_putmounts(outfile, devs, mnt_pts, fs_types, mount_count);
    if(ret < 0)
    {
        fprintf(stderr, "Error: unable to write mount information.\n");
        darshan_log_close(outfile);
        return(-1);
    }

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    ret = darshan_log_getfile(infile, &job, &cp_file);
    if(ret < 0)
    {
        fprintf(stderr, "Error: failed to process log file.\n");
        fflush(stderr);
    }
    if(ret == 0)
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    {
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        goto done;
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    }

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    do
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    {
        if(cp_file.rank != -1 && cp_file.rank < last_rank)
        {
            fprintf(stderr, "Error: log file contains out of order rank data.\n");
            fflush(stderr);
            return(-1);
        }
        if(cp_file.rank != -1)
            last_rank = cp_file.rank;
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        if(!hash || hash == cp_file.hash)
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        {
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            if (obfuscate) obfuscate_file(key, &cp_file);

            ret = darshan_log_putfile(outfile, &job, &cp_file);
            if (ret < 0)
            {
                fprintf(stderr, "Error: failed to write file record.\n");
                break;
            }
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        }
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    } while((ret = darshan_log_getfile(infile, &job, &cp_file)) == 1);
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    if(ret < 0)
    {
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        fprintf(stderr, "Error: failed to process log file.\n");
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        fflush(stderr);
    }

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done:
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    for(i=0; i<mount_count; i++)
    {
        free(mnt_pts[i]);
        free(fs_types[i]);
    }
    if(mount_count > 0)
    {
        free(devs);
        free(mnt_pts);
        free(fs_types);
    }
 
    darshan_log_close(infile);
    darshan_log_close(outfile);

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    return(ret);
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}

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