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/* Copyright 2017 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "debug.h"
#include "utils.h"
#include "eccutils.h"
extern FILE* messageFile;
extern int verbose;
#define CFG_FILES_MAX 100 /* a sufficiently large number of project configuration files */
/* GetAuxArgs() parses an ECC auxiliary configuration file of the form:
sign_algorithm=
digest_algorithm=
check_unique=
raw_header_input=
cfg_files=
project=
...
*/
int GetAuxArgs(char **signAlgorithm, /* freed by caller */
char **digestAlgorithm, /* freed by caller */
int *checkUnique,
int *rawHeaderInput,
unsigned int *numberOfProjectFiles,
char ***projectConfigFilenames, /* array freed by caller */
const char *projectAuxConfigFileName)
{
int rc = 0; /* general return code */
size_t i;
char *lineBuffer = NULL; /* freed @2 */
size_t lineBufferLength = 4000; /* hard code for the project */
FILE *projectAuxConfigFile = NULL; /* closed @1 */
/* open project auxiliary configuration file */
if (rc == 0) {
if (verbose) fprintf(messageFile,
"Opening auxiliary configuration file %s\n",
projectAuxConfigFileName);
projectAuxConfigFile = fopen(projectAuxConfigFileName, "r"); /* closed @1 */
if (projectAuxConfigFile == NULL) {
fprintf(messageFile,
"ERROR2001: Cannot open auxiliary configuration file %s, %s\n",
projectAuxConfigFileName, strerror(errno));
rc = ERROR_CODE;
}
}
/* allocate a line buffer, used when parsing the configuration file */
if (rc == 0) {
rc = Malloc_Safe((unsigned char **)&lineBuffer, /* freed @2 */
lineBufferLength,
lineBufferLength); /* hard code for the project */
}
/* signing algorithm */
if (rc == 0) {
rc = File_MapNameToValue(signAlgorithm, /* freed by caller */
"sign_algorithm",
lineBuffer,
lineBufferLength,
projectAuxConfigFile);
if (rc != 0) {
fprintf(messageFile,
"ERROR2002: Signing algorithm is not specified in "
"auxiliary configuration file\n");
}
}
if (rc == 0) {
if (verbose) fprintf(messageFile,
"Signing algorithm %s\n",
*signAlgorithm);
}
/* digest algorithm */
if (rc == 0) {
rc = File_MapNameToValue(digestAlgorithm, /* freed by caller */
"digest_algorithm",
lineBuffer,
lineBufferLength,
projectAuxConfigFile);
if (rc != 0) {
fprintf(messageFile,
"ERROR2004: Digest algorithm is not "
"specified in auxiliary configuration file\n");
}
}
if (rc == 0) {
if (verbose) fprintf(messageFile,
"Digest algorithm %s\n",
*digestAlgorithm);
}
/* checkUnique boolean */
if (rc == 0) {
rc = File_MapNameToBool(checkUnique,
"check_unique",
lineBuffer,
lineBufferLength,
projectAuxConfigFile);
if (rc != 0) {
fprintf(messageFile,
"ERROR2005: Check_unique has an illegal value\n");
}
}
if (rc == 0) {
if (verbose) fprintf(messageFile, "ProjectConfig_Parse: Check unique: %d\n",
*checkUnique);
}
/* rawHeaderInput boolean */
if (rc == 0) {
rc = File_MapNameToBool(rawHeaderInput,
"raw_header_input",
lineBuffer,
lineBufferLength,
projectAuxConfigFile);
if (rc != 0) {
fprintf(messageFile,
"ERROR2005a: raw_header_input has an illegal value\n");
}
}
if (rc == 0) {
if (verbose) fprintf(messageFile, "ProjectConfig_Parse: Raw Header Input: %d\n",
*rawHeaderInput);
}
/* get the number of project configuration files */
if (rc == 0) {
rc = File_MapNameToUint(numberOfProjectFiles,
"cfg_files",
lineBuffer,
lineBufferLength,
projectAuxConfigFile);
if (rc != 0) {
fprintf(messageFile,
"ERROR2006: Number of project configuration files "
"is not specified in auxiliary configuration file\n");
}
}
if (rc == 0) {
if (verbose) fprintf(messageFile,
"Number of project configuration files: %u\n",
*numberOfProjectFiles);
}
if (rc == 0) {
if (*numberOfProjectFiles > CFG_FILES_MAX) {
fprintf(messageFile,
"ERROR2007: Number of project configuration files %u is > %u\n",
*numberOfProjectFiles, CFG_FILES_MAX);
rc = ERROR_CODE;
}
if (*numberOfProjectFiles == 0) {
fprintf(messageFile,
"ERROR2008: Number of project configuration files is zero\n");
rc = ERROR_CODE;
}
}
/* allocate the array of project file names */
if (rc == 0) {
rc = Malloc_Safe((unsigned char **)projectConfigFilenames,
sizeof(char *) * (*numberOfProjectFiles), /* freed by caller */
CFG_FILES_MAX * sizeof(char *)); /* hard code for the project */
}
/* immediately NULL so that free is safe */
for (i = 0 ; (rc == 0) && (i < *numberOfProjectFiles) ; i++) {
(*projectConfigFilenames)[i] = NULL;
}
/* get the project file names */
for (i = 0 ; (rc == 0) && (i < *numberOfProjectFiles) ; i++) {
if (rc == 0) {
rc = File_MapNameToValue(&((*projectConfigFilenames)[i]), /* freed by caller */
"project",
lineBuffer,
lineBufferLength,
projectAuxConfigFile);
if (rc != 0) {
fprintf(messageFile,
"ERROR2009: Insufficient number of project configuration files\n");
}
}
if (rc == 0) {
if (verbose) fprintf(messageFile,
"Project config file name %d: %s\n",
(int)i+1, (*projectConfigFilenames)[i]);
}
}
if (projectAuxConfigFile != NULL) {
fclose(projectAuxConfigFile); /* @1 */
}
free(lineBuffer); /* @2 */
return rc;
}
/* GetSendersArray() gets an array of senders per project. It allocates the ***senders array of
projects.
Pointers:
senders - pointer to array of projects
(*senders) - array of project arrays, allocated here
(*senders)[i] - project array, allocated by each File_GetValueArray()
(*senders)[i][j] - project array entry, pointer to sender string, allocated within
File_GetValueArray()
*/
int GetSendersArray(char ****senders, /* array of senders per project,
freed by caller */
unsigned int **numberOfSenders, /* array of number of senders per
project, freed by caller */
unsigned int numberOfProjectFiles,
char **projectConfigFilenames) /* array of file names, freed @4 */
{
int rc = 0; /* general return code */
FILE *projectConfigFile = NULL; /* closed @1 */
size_t i; /* iterate through project configuration files */
size_t j; /* interate through senders in a file */
char *lineBuffer = NULL; /* freed @1 */
size_t lineBufferLength = 4000; /* hard code for the project */
/* allocate arrays for the number of senders and senders list in each */
/* allocate a line buffer, used when parsing the configuration file */
if (rc == 0) {
rc = Malloc_Safe((unsigned char **)&lineBuffer, /* freed @1 */
lineBufferLength,
lineBufferLength); /* hard code for the project */
}
if (rc == 0) {
rc = Malloc_Safe((unsigned char **)numberOfSenders, /* freed by caller */
numberOfProjectFiles * sizeof(size_t),
MAX_PROJECT_FILES * sizeof(size_t)); /* hard code for the project */
}
if (rc == 0) {
rc = Malloc_Safe((unsigned char **)senders, /* freed by caller */
numberOfProjectFiles * sizeof(char *),
MAX_PROJECT_FILES * sizeof(char *)); /* hard code for the project */
}
/* immediately NULL the array so it can be freed */
for (i = 0 ; (rc == 0) && (i < numberOfProjectFiles) ; i++) {
(*senders)[i] = NULL;
}
/* iterate through the project configuration files, building arrays of authorized senders */
for (i = 0 ; (rc == 0) && (i < numberOfProjectFiles) ; i++) {
/* open project configuration file */
if (rc == 0) {
if (verbose) fprintf(messageFile,
"GetSendersArray: Processing project configuration file %s\n",
projectConfigFilenames[i]);
projectConfigFile = fopen(projectConfigFilenames[i], "r"); /* closed @1 */
if (projectConfigFile == NULL) {
fprintf(messageFile,
"ERROR2010: Could not open project configuration file: %s\n",
projectConfigFilenames[i]);
rc = ERROR_CODE;
}
}
/* determine whether senders are needed */
int needSenders = 0;
if (rc == 0) {
rc = File_MapNameToBool(&needSenders,
"needsenders",
lineBuffer,
lineBufferLength,
projectConfigFile);
}
if (rc == 0) {
if (verbose) fprintf(messageFile,
"Signing project needs senders: %d\n", needSenders);
}
/* read the list of authorized senders */
if (rc == 0) {
char ** emails = NULL;
rc = File_GetNameValueArray(&((*senders)[i]), /* freed by caller */
&emails, /* freed below */
(size_t*)&((*numberOfSenders)[i]), /* number of authorized senders */
lineBuffer,
lineBufferLength,
projectConfigFile);
// We don't use the emails so delete right away
for (j = 0; j < (*numberOfSenders)[i]; j ++) {
free(emails[j]);
}
free(emails);
emails = NULL;
}
if (rc == 0) {
if (verbose) fprintf(messageFile,
"GetSendersArray: Found %u authorized senders\n",
(*numberOfSenders)[i]);
for (j = 0 ; j < (*numberOfSenders)[i] ; j++) {
if (verbose) fprintf(messageFile,
"GetSendersArray: Sender %d: %s\n",
(int)j+1, (*senders)[i][j]);
}
}
if (projectConfigFile != NULL) {
fclose(projectConfigFile); /* @7 */
projectConfigFile = NULL;
}
}
free(lineBuffer); /* @1 */
return rc;
}
/* CheckSenders() verifies that all senders in the arrays are unique. */
int CheckSenders(unsigned int numberOfProjectFiles,
char **projectConfigFilenames,
unsigned int *numberOfSenders,
char ***senders) /* array of senders per project */
{
int rc = 0;
size_t i; /* iterate through project configuration files */
size_t j; /* interate through senders in a file */
size_t k; /* interate through senders in a file */
size_t l; /* interate through senders in a file */
char *senderToCheck;
/* iterate through all files */
for (i = 0 ; (rc == 0) && (i < numberOfProjectFiles) ; i++) {
/* iterate through all senders in the file */
for (j = 0 ; (rc == 0) && (j < numberOfSenders[i]) ; j++) {
senderToCheck = senders[i][j];
if (verbose) fprintf(messageFile,
"CheckSenders: Check sender %d %d\n",
(int)i, (int)j);
/* first check that the sender is not duplicated in this file */
for (k = j+1 ; (rc == 0) && (k < numberOfSenders[i]) ; k++) {
if (verbose) fprintf(messageFile,
"CheckSenders: Check against %d %d\n",
(int)i, (int)k);
if (strcmp(senderToCheck, senders[i][k]) == 0) {
fprintf(messageFile,
"ERROR2003: Duplicate sender %s in file %s\n",
senderToCheck, projectConfigFilenames[i]);
rc = ERROR_CODE;
}
}
/* then check that it's not duplicated in any other file */
for (k = i+1 ; (rc == 0) && (k < numberOfProjectFiles) ; k++) {
for (l = 0 ; (rc == 0) && (l < numberOfSenders[k]) ; l++) {
if (verbose) fprintf(messageFile,
"CheckSenders: Check against %d %d\n",
(int)k, (int)l);
if (strcmp(senderToCheck, senders[k][l]) == 0) {
fprintf(messageFile,
"ERROR2004: Duplicate sender %s in files %s and %s\n",
senderToCheck,
projectConfigFilenames[i],
projectConfigFilenames[k]);
rc = ERROR_CODE;
}
}
}
}
}
return rc;
}
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