/*
* Delete a module from the Data Base
*/
static SECStatus
nssutil_DeleteSecmodDBEntry(const char *appName,
const char *filename,
const char *dbname,
char *args,
PRBool rw)
{
/* SHDB_FIXME implement */
os_stat_type stat_existing;
os_open_permissions_type file_mode;
FILE *fd = NULL;
FILE *fd2 = NULL;
char line[MAX_LINE_LENGTH];
char *dbname2 = NULL;
char *block = NULL;
char *name = NULL;
char *lib = NULL;
int name_len = 0, lib_len = 0;
PRBool skip = PR_FALSE;
PRBool found = PR_FALSE;
if (dbname == NULL) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (!rw) {
PORT_SetError(SEC_ERROR_READ_ONLY);
return SECFailure;
}
dbname2 = PORT_Strdup(dbname);
if (dbname2 == NULL) goto loser;
dbname2[strlen(dbname)-1]++;
/* get the permissions of the existing file, or use the default */
if (!os_stat(dbname, &stat_existing)) {
file_mode = stat_existing.st_mode;
} else {
file_mode = os_open_permissions_default;
}
/* do we really want to use streams here */
fd = fopen(dbname, "r");
if (fd == NULL) goto loser;
fd2 = lfopen(dbname2, lfopen_truncate, file_mode);
if (fd2 == NULL) goto loser;
name = NSSUTIL_ArgGetParamValue("name",args);
if (name) {
name_len = PORT_Strlen(name);
}
lib = NSSUTIL_ArgGetParamValue("library",args);
if (lib) {
lib_len = PORT_Strlen(lib);
}
/*
* the following loop takes line separated config files and collapses
* the lines to a single string, escaping and quoting as necessary.
*/
/* loop state variables */
block = NULL;
skip = PR_FALSE;
while (fgets(line, sizeof(line), fd) != NULL) {
/* If we are processing a block (we haven't hit a blank line yet */
if (*line != '\n') {
/* skip means we are in the middle of a block we are deleting */
if (skip) {
continue;
}
/* if we haven't found the block yet, check to see if this block
* matches our requirements */
if (!found && ((name && (PORT_Strncasecmp(line,"name=",5) == 0) &&
(PORT_Strncmp(line+5,name,name_len) == 0)) ||
(lib && (PORT_Strncasecmp(line,"library=",8) == 0) &&
(PORT_Strncmp(line+8,lib,lib_len) == 0)))) {
/* yup, we don't need to save any more data, */
PORT_Free(block);
block=NULL;
/* we don't need to collect more of this block */
skip = PR_TRUE;
/* we don't need to continue searching for the block */
found =PR_TRUE;
continue;
}
/* not our match, continue to collect data in this block */
block = nssutil_DupCat(block,line);
continue;
}
/* we've collected a block of data that wasn't the module we were
* looking for, write it out */
if (block) {
fwrite(block, PORT_Strlen(block), 1, fd2);
PORT_Free(block);
block = NULL;
}
/* If we didn't just delete the this block, keep the blank line */
if (!skip) {
fputs(line,fd2);
}
/* we are definately not in a deleted block anymore */
skip = PR_FALSE;
}
fclose(fd);
fclose(fd2);
if (found) {
/* rename dbname2 to dbname */
PR_Delete(dbname);
PR_Rename(dbname2,dbname);
} else {
PR_Delete(dbname2);
}
PORT_Free(dbname2);
PORT_Free(lib);
PORT_Free(name);
PORT_Free(block);
return SECSuccess;
loser:
if (fd != NULL) {
fclose(fd);
}
if (fd2 != NULL) {
fclose(fd2);
}
if (dbname2) {
PR_Delete(dbname2);
PORT_Free(dbname2);
}
PORT_Free(lib);
PORT_Free(name);
return SECFailure;
}
/*
* Add a module to the Data base
*/
static SECStatus
nssutil_AddSecmodDBEntry(const char *appName,
const char *filename, const char *dbname,
char *module, PRBool rw)
{
os_stat_type stat_existing;
os_open_permissions_type file_mode;
FILE *fd = NULL;
char *block = NULL;
PRBool libFound = PR_FALSE;
if (dbname == NULL) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
/* can't write to a read only module */
if (!rw) {
PORT_SetError(SEC_ERROR_READ_ONLY);
return SECFailure;
}
/* remove the previous version if it exists */
(void) nssutil_DeleteSecmodDBEntry(appName, filename, dbname, module, rw);
/* get the permissions of the existing file, or use the default */
if (!os_stat(dbname, &stat_existing)) {
file_mode = stat_existing.st_mode;
} else {
file_mode = os_open_permissions_default;
}
fd = lfopen(dbname, lfopen_append, file_mode);
if (fd == NULL) {
return SECFailure;
}
module = NSSUTIL_ArgStrip(module);
while (*module) {
int count;
char *keyEnd = PORT_Strchr(module,'=');
char *value;
if (PORT_Strncmp(module, "library=", 8) == 0) {
libFound=PR_TRUE;
}
if (keyEnd == NULL) {
block = nssutil_DupCat(block, module);
break;
}
block = nssutil_DupnCat(block, module, keyEnd-module+1);
if (block == NULL) { goto loser; }
value = NSSUTIL_ArgFetchValue(&keyEnd[1], &count);
if (value) {
block = nssutil_DupCat(block, NSSUTIL_ArgStrip(value));
PORT_Free(value);
}
if (block == NULL) { goto loser; }
block = nssutil_DupnCat(block, "\n", 1);
module = keyEnd + 1 + count;
module = NSSUTIL_ArgStrip(module);
}
if (block) {
if (!libFound) {
fprintf(fd,"library=\n");
}
fwrite(block, PORT_Strlen(block), 1, fd);
fprintf(fd,"\n");
PORT_Free(block);
block = NULL;
}
fclose(fd);
return SECSuccess;
loser:
PORT_Free(block);
fclose(fd);
return SECFailure;
}
/*
* Add a module to the Data base
*/
static SECStatus
nssutil_AddSecmodDB(const char *appName,
const char *filename, const char *dbname,
char *module, PRBool rw)
{
FILE *fd = NULL;
char *block = NULL;
PRBool libFound = PR_FALSE;
if (dbname == NULL) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
/* can't write to a read only module */
if (!rw) {
PORT_SetError(SEC_ERROR_READ_ONLY);
return SECFailure;
}
/* remove the previous version if it exists */
(void) nssutil_DeleteSecmodDB(appName, filename,
dbname, module, rw);
fd = lfopen(dbname, "a+", O_CREAT|O_RDWR|O_APPEND);
if (fd == NULL) {
return SECFailure;
}
module = NSSUTIL_ArgStrip(module);
while (*module) {
int count;
char *keyEnd = PORT_Strchr(module,'=');
char *value;
if (PORT_Strncmp(module, "library=", 8) == 0) {
libFound=PR_TRUE;
}
if (keyEnd == NULL) {
block = nssutil_DupCat(block, module);
break;
}
block = nssutil_DupnCat(block, module, keyEnd-module+1);
if (block == NULL) { goto loser; }
value = NSSUTIL_ArgFetchValue(&keyEnd[1], &count);
if (value) {
block = nssutil_DupCat(block, NSSUTIL_ArgStrip(value));
PORT_Free(value);
}
if (block == NULL) { goto loser; }
block = nssutil_DupnCat(block, "\n", 1);
module = keyEnd + 1 + count;
module = NSSUTIL_ArgStrip(module);
}
if (block) {
if (!libFound) {
fprintf(fd,"library=\n");
}
fwrite(block, PORT_Strlen(block), 1, fd);
fprintf(fd,"\n");
PORT_Free(block);
block = NULL;
}
fclose(fd);
return SECSuccess;
loser:
PORT_Free(block);
fclose(fd);
return SECFailure;
}
