static VersionCmpResult RunCmpCommand(const char *command, const char *v1, const char *v2, Attributes a, Promise *pp)
{
char expanded_command[CF_EXPANDSIZE];
SetNewScope("cf_pack_context");
NewScalar("cf_pack_context", "v1", v1, cf_str);
NewScalar("cf_pack_context", "v2", v2, cf_str);
ExpandScalar(command, expanded_command);
DeleteScope("cf_pack_context");
FILE *pfp = a.packages.package_commands_useshell ? cf_popen_sh(expanded_command, "w") : cf_popen(expanded_command, "w");
if (pfp == NULL)
{
cfPS(cf_error, CF_FAIL, "cf_popen", pp, a, "Can not start package version comparison command: %s", expanded_command);
return VERCMP_ERROR;
}
CfOut(cf_verbose, "", "Executing %s", expanded_command);
int retcode = cf_pclose(pfp);
if (retcode == -1)
{
cfPS(cf_error, CF_FAIL, "cf_pclose", pp, a, "Error during package version comparison command execution: %s",
expanded_command);
return VERCMP_ERROR;
}
return retcode == 0;
}
static VersionCmpResult RunCmpCommand(EvalContext *ctx, const char *command, const char *v1, const char *v2, Attributes a,
const Promise *pp, PromiseResult *result)
{
Buffer *expanded_command = BufferNew();
{
VarRef *ref_v1 = VarRefParseFromScope("v1", PACKAGES_CONTEXT);
EvalContextVariablePut(ctx, ref_v1, v1, CF_DATA_TYPE_STRING, "source=promise");
VarRef *ref_v2 = VarRefParseFromScope("v2", PACKAGES_CONTEXT);
EvalContextVariablePut(ctx, ref_v2, v2, CF_DATA_TYPE_STRING, "source=promise");
ExpandScalar(ctx, NULL, PACKAGES_CONTEXT, command, expanded_command);
EvalContextVariableRemove(ctx, ref_v1);
VarRefDestroy(ref_v1);
EvalContextVariableRemove(ctx, ref_v2);
VarRefDestroy(ref_v2);
}
FILE *pfp = a.packages.package_commands_useshell ? cf_popen_sh(BufferData(expanded_command), "w") : cf_popen(BufferData(expanded_command), "w", true);
if (pfp == NULL)
{
cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_FAIL, pp, a, "Can not start package version comparison command '%s'. (cf_popen: %s)",
BufferData(expanded_command), GetErrorStr());
*result = PromiseResultUpdate(*result, PROMISE_RESULT_FAIL);
BufferDestroy(expanded_command);
return VERCMP_ERROR;
}
Log(LOG_LEVEL_VERBOSE, "Executing '%s'", BufferData(expanded_command));
int retcode = cf_pclose(pfp);
if (retcode == -1)
{
cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_FAIL, pp, a, "Error during package version comparison command execution '%s'. (cf_pclose: %s)",
BufferData(expanded_command), GetErrorStr());
*result = PromiseResultUpdate(*result, PROMISE_RESULT_FAIL);
BufferDestroy(expanded_command);
return VERCMP_ERROR;
}
BufferDestroy(expanded_command);
return retcode == 0;
}
static VersionCmpResult RunCmpCommand(EvalContext *ctx, const char *command, const char *v1, const char *v2, Attributes a, Promise *pp)
{
char expanded_command[CF_EXPANDSIZE];
{
VarRef *ref_v1 = VarRefParseFromScope("v1", "cf_pack_context");
EvalContextVariablePut(ctx, ref_v1, (Rval) { v1, RVAL_TYPE_SCALAR }, DATA_TYPE_STRING);
VarRef *ref_v2 = VarRefParseFromScope("v2", "cf_pack_context");
EvalContextVariablePut(ctx, ref_v2, (Rval) { v2, RVAL_TYPE_SCALAR }, DATA_TYPE_STRING);
ExpandScalar(ctx, NULL, "cf_pack_context", command, expanded_command);
EvalContextVariableRemove(ctx, ref_v1);
VarRefDestroy(ref_v1);
EvalContextVariableRemove(ctx, ref_v2);
VarRefDestroy(ref_v2);
}
FILE *pfp = a.packages.package_commands_useshell ? cf_popen_sh(expanded_command, "w") : cf_popen(expanded_command, "w", true);
if (pfp == NULL)
{
cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_FAIL, pp, a, "Can not start package version comparison command '%s'. (cf_popen: %s)",
expanded_command, GetErrorStr());
return VERCMP_ERROR;
}
Log(LOG_LEVEL_VERBOSE, "Executing '%s'", expanded_command);
int retcode = cf_pclose(pfp);
if (retcode == -1)
{
cfPS(ctx, LOG_LEVEL_ERR, PROMISE_RESULT_FAIL, pp, a, "Error during package version comparison command execution '%s'. (cf_pclose: %s)",
expanded_command, GetErrorStr());
return VERCMP_ERROR;
}
return retcode == 0;
}
static bool ChangePasswordHashUsingChpasswd(const char *puser, const char *password)
{
int status;
const char *cmd_str = CHPASSWD " -e";
Log(LOG_LEVEL_VERBOSE, "Changing password hash for user '%s'. (command: '%s')", puser, cmd_str);
FILE *cmd = cf_popen_sh(cmd_str, "w");
if (!cmd)
{
Log(LOG_LEVEL_ERR, "Could not launch password changing command '%s': %s.", cmd_str, GetErrorStr());
return false;
}
// String lengths plus a ':' and a '\n', but not including '\0'.
size_t total_len = strlen(puser) + strlen(password) + 2;
char change_string[total_len + 1];
xsnprintf(change_string, total_len + 1, "%s:%s\n", puser, password);
clearerr(cmd);
if (fwrite(change_string, total_len, 1, cmd) != 1)
{
const char *error_str;
if (ferror(cmd))
{
error_str = GetErrorStr();
}
else
{
error_str = "Unknown error";
}
Log(LOG_LEVEL_ERR, "Could not write password to password changing command '%s': %s.", cmd_str, error_str);
cf_pclose(cmd);
return false;
}
status = cf_pclose(cmd);
if (status)
{
Log(LOG_LEVEL_ERR, "'%s' returned non-zero status: %i\n", cmd_str, status);
return false;
}
return true;
}
bool GetExecOutput(const char *command, char *buffer, bool useshell)
/* Buffer initially contains whole exec string */
{
int offset = 0;
char line[CF_EXPANDSIZE];
FILE *pp;
CfDebug("GetExecOutput(%s,%s) - use shell = %d\n", command, buffer, useshell);
if (useshell)
{
pp = cf_popen_sh(command, "r");
}
else
{
pp = cf_popen(command, "r", true);
}
if (pp == NULL)
{
CfOut(OUTPUT_LEVEL_ERROR, "cf_popen", "Couldn't open pipe to command %s\n", command);
return false;
}
memset(buffer, 0, CF_EXPANDSIZE);
for (;;)
{
ssize_t res = CfReadLine(line, CF_EXPANDSIZE, pp);
if (res == 0)
{
break;
}
if (res == -1)
{
CfOut(OUTPUT_LEVEL_ERROR, "fread", "Unable to read output of command %s", command);
cf_pclose(pp);
return false;
}
if (strlen(line) + offset > CF_EXPANDSIZE - 10)
{
CfOut(OUTPUT_LEVEL_ERROR, "", "Buffer exceeded %d bytes in exec %s\n", CF_EXPANDSIZE, command);
break;
}
snprintf(buffer + offset, CF_EXPANDSIZE, "%s\n", line);
offset += strlen(line) + 1;
}
if (offset > 0)
{
if (Chop(buffer, CF_EXPANDSIZE) == -1)
{
CfOut(OUTPUT_LEVEL_ERROR, "", "Chop was called on a string that seemed to have no terminator");
}
}
CfDebug("GetExecOutput got: [%s]\n", buffer);
cf_pclose(pp);
return true;
}
void LocalExec(const ExecConfig *config)
{
FILE *pp;
char line[CF_BUFSIZE], line_escaped[sizeof(line) * 2], filename[CF_BUFSIZE], *sp;
char cmd[CF_BUFSIZE], esc_command[CF_BUFSIZE];
int print, count = 0;
void *thread_name;
time_t starttime = time(NULL);
char starttime_str[64];
FILE *fp;
char canonified_fq_name[CF_BUFSIZE];
thread_name = ThreadUniqueName();
cf_strtimestamp_local(starttime, starttime_str);
CfOut(cf_verbose, "", "------------------------------------------------------------------\n\n");
CfOut(cf_verbose, "", " LocalExec(%sscheduled) at %s\n", config->scheduled_run ? "" : "not ", starttime_str);
CfOut(cf_verbose, "", "------------------------------------------------------------------\n");
/* Need to make sure we have LD_LIBRARY_PATH here or children will die */
if (strlen(config->exec_command) > 0)
{
strncpy(cmd, config->exec_command, CF_BUFSIZE - 1);
if (!strstr(cmd, "-Dfrom_cfexecd"))
{
strcat(cmd, " -Dfrom_cfexecd");
}
}
else
{
ConstructFailsafeCommand(config->scheduled_run, cmd);
}
strncpy(esc_command, MapName(cmd), CF_BUFSIZE - 1);
snprintf(line, CF_BUFSIZE - 1, "_%jd_%s", (intmax_t) starttime, CanonifyName(cf_ctime(&starttime)));
strlcpy(canonified_fq_name, config->fq_name, CF_BUFSIZE);
CanonifyNameInPlace(canonified_fq_name);
snprintf(filename, CF_BUFSIZE - 1, "%s/outputs/cf_%s_%s_%p", CFWORKDIR, canonified_fq_name, line, thread_name);
MapName(filename);
/* What if no more processes? Could sacrifice and exec() - but we need a sentinel */
if ((fp = fopen(filename, "w")) == NULL)
{
CfOut(cf_error, "fopen", "!! Couldn't open \"%s\" - aborting exec\n", filename);
return;
}
#if !defined(__MINGW32__)
/*
* Don't inherit this file descriptor on fork/exec
*/
if (fileno(fp) != -1)
{
fcntl(fileno(fp), F_SETFD, FD_CLOEXEC);
}
#endif
CfOut(cf_verbose, "", " -> Command => %s\n", cmd);
if ((pp = cf_popen_sh(esc_command, "r")) == NULL)
{
CfOut(cf_error, "cf_popen", "!! Couldn't open pipe to command \"%s\"\n", cmd);
fclose(fp);
return;
}
CfOut(cf_verbose, "", " -> Command is executing...%s\n", esc_command);
while (!feof(pp))
{
if(!IsReadReady(fileno(pp), (config->agent_expireafter * SECONDS_PER_MINUTE)))
{
char errmsg[CF_MAXVARSIZE];
snprintf(errmsg, sizeof(errmsg), "cf-execd: !! Timeout waiting for output from agent (agent_expireafter=%d) - terminating it",
config->agent_expireafter);
CfOut(cf_error, "", "%s", errmsg);
fprintf(fp, "%s\n", errmsg);
count++;
pid_t pid_agent;
if(PipeToPid(&pid_agent, pp))
{
ProcessSignalTerminate(pid_agent);
}
else
{
CfOut(cf_error, "", "!! Could not get PID of agent");
}
break;
}
{
ssize_t num_read = CfReadLine(line, CF_BUFSIZE, pp);
if (num_read == -1)
{
FatalError("Cannot continue on CfReadLine error");
}
else if (num_read == 0)
{
break;
}
}
if(!CfReadLine(line, CF_BUFSIZE, pp))
{
break;
}
if (ferror(pp))
{
fflush(pp);
break;
}
print = false;
for (sp = line; *sp != '\0'; sp++)
{
if (!isspace((int) *sp))
{
print = true;
break;
}
}
if (print)
{
// we must escape print format chars (%) from output
ReplaceStr(line, line_escaped, sizeof(line_escaped), "%", "%%");
fprintf(fp, "%s\n", line_escaped);
count++;
/* If we can't send mail, log to syslog */
if (strlen(config->mail_to_address) == 0)
{
strncat(line_escaped, "\n", sizeof(line_escaped) - 1 - strlen(line_escaped));
if ((strchr(line_escaped, '\n')) == NULL)
{
line_escaped[sizeof(line_escaped) - 2] = '\n';
}
CfOut(cf_inform, "", "%s", line_escaped);
}
line[0] = '\0';
line_escaped[0] = '\0';
}
}
cf_pclose(pp);
CfDebug("Closing fp\n");
fclose(fp);
CfOut(cf_verbose, "", " -> Command is complete\n");
if (count)
{
CfOut(cf_verbose, "", " -> Mailing result\n");
MailResult(config, filename);
}
else
{
CfOut(cf_verbose, "", " -> No output\n");
unlink(filename);
}
}
static bool IsReadReady(int fd, int timeout_sec)
{
fd_set rset;
FD_ZERO(&rset);
FD_SET(fd, &rset);
struct timeval tv = {
.tv_sec = timeout_sec,
.tv_usec = 0,
};
int ret = select(fd + 1, &rset, NULL, NULL, &tv);
if(ret < 0)
{
Log(LOG_LEVEL_ERR, "IsReadReady: Failed checking for data. (select: %s)", GetErrorStr());
return false;
}
if(FD_ISSET(fd, &rset))
{
return true;
}
if(ret == 0) // timeout
{
return false;
}
// can we get here?
Log(LOG_LEVEL_ERR, "IsReadReady: Unknown outcome (ret > 0 but our only fd is not set). (select: %s)", GetErrorStr());
return false;
}
#if defined(__hpux) && defined(__GNUC__)
#pragma GCC diagnostic warning "-Wstrict-aliasing"
#endif
#endif /* __MINGW32__ */
void LocalExec(const ExecConfig *config)
{
time_t starttime = time(NULL);
void *thread_name = ThreadUniqueName();
{
char starttime_str[64];
cf_strtimestamp_local(starttime, starttime_str);
if (LEGACY_OUTPUT)
{
Log(LOG_LEVEL_VERBOSE, "------------------------------------------------------------------");
Log(LOG_LEVEL_VERBOSE, " LocalExec(%sscheduled) at %s", config->scheduled_run ? "" : "not ", starttime_str);
Log(LOG_LEVEL_VERBOSE, "------------------------------------------------------------------");
}
else
{
Log(LOG_LEVEL_VERBOSE, "LocalExec(%sscheduled) at %s", config->scheduled_run ? "" : "not ", starttime_str);
}
}
/* Need to make sure we have LD_LIBRARY_PATH here or children will die */
char cmd[CF_BUFSIZE];
if (strlen(config->exec_command) > 0)
{
strncpy(cmd, config->exec_command, CF_BUFSIZE - 1);
if (!strstr(cmd, "-Dfrom_cfexecd"))
{
strcat(cmd, " -Dfrom_cfexecd");
}
}
else
{
ConstructFailsafeCommand(config->scheduled_run, cmd);
}
char esc_command[CF_BUFSIZE];
strncpy(esc_command, MapName(cmd), CF_BUFSIZE - 1);
char line[CF_BUFSIZE];
snprintf(line, CF_BUFSIZE - 1, "_%jd_%s", (intmax_t) starttime, CanonifyName(ctime(&starttime)));
char filename[CF_BUFSIZE];
{
char canonified_fq_name[CF_BUFSIZE];
strlcpy(canonified_fq_name, config->fq_name, CF_BUFSIZE);
CanonifyNameInPlace(canonified_fq_name);
snprintf(filename, CF_BUFSIZE - 1, "%s/outputs/cf_%s_%s_%p", CFWORKDIR, canonified_fq_name, line, thread_name);
MapName(filename);
}
/* What if no more processes? Could sacrifice and exec() - but we need a sentinel */
FILE *fp = fopen(filename, "w");
if (!fp)
{
Log(LOG_LEVEL_ERR, "Couldn't open '%s' - aborting exec. (fopen: %s)", filename, GetErrorStr());
return;
}
#if !defined(__MINGW32__)
/*
* Don't inherit this file descriptor on fork/exec
*/
if (fileno(fp) != -1)
{
fcntl(fileno(fp), F_SETFD, FD_CLOEXEC);
}
#endif
Log(LOG_LEVEL_VERBOSE, "Command => %s", cmd);
FILE *pp = cf_popen_sh(esc_command, "r");
if (!pp)
{
Log(LOG_LEVEL_ERR, "Couldn't open pipe to command '%s'. (cf_popen: %s)", cmd, GetErrorStr());
fclose(fp);
return;
}
Log(LOG_LEVEL_VERBOSE, "Command is executing...%s", esc_command);
int count = 0;
for (;;)
{
if(!IsReadReady(fileno(pp), (config->agent_expireafter * SECONDS_PER_MINUTE)))
{
char errmsg[CF_MAXVARSIZE];
snprintf(errmsg, sizeof(errmsg), "cf-execd: !! Timeout waiting for output from agent (agent_expireafter=%d) - terminating it",
config->agent_expireafter);
Log(LOG_LEVEL_ERR, "%s", errmsg);
fprintf(fp, "%s\n", errmsg);
count++;
pid_t pid_agent;
if(PipeToPid(&pid_agent, pp))
{
ProcessSignalTerminate(pid_agent);
}
else
{
Log(LOG_LEVEL_ERR, "Could not get PID of agent");
}
break;
}
ssize_t res = CfReadLine(line, CF_BUFSIZE, pp);
if (res == 0)
{
break;
}
if (res == -1)
{
Log(LOG_LEVEL_ERR, "Unable to read output from command '%s'. (cfread: %s)", cmd, GetErrorStr());
cf_pclose(pp);
return;
}
bool print = false;
for (const char *sp = line; *sp != '\0'; sp++)
{
if (!isspace((int) *sp))
{
print = true;
break;
}
}
if (print)
{
char line_escaped[sizeof(line) * 2];
// we must escape print format chars (%) from output
ReplaceStr(line, line_escaped, sizeof(line_escaped), "%", "%%");
fprintf(fp, "%s\n", line_escaped);
count++;
/* If we can't send mail, log to syslog */
if (strlen(config->mail_to_address) == 0)
{
strncat(line_escaped, "\n", sizeof(line_escaped) - 1 - strlen(line_escaped));
if ((strchr(line_escaped, '\n')) == NULL)
{
line_escaped[sizeof(line_escaped) - 2] = '\n';
}
Log(LOG_LEVEL_INFO, "%s", line_escaped);
}
line[0] = '\0';
line_escaped[0] = '\0';
}
}
cf_pclose(pp);
Log(LOG_LEVEL_DEBUG, "Closing fp");
fclose(fp);
Log(LOG_LEVEL_VERBOSE, "Command is complete");
if (count)
{
Log(LOG_LEVEL_VERBOSE, "Mailing result");
MailResult(config, filename);
}
else
{
Log(LOG_LEVEL_VERBOSE, "No output");
unlink(filename);
}
}
void DoExec(EvalContext *ctx, ServerConnectionState *conn, char *args)
{
char ebuff[CF_EXPANDSIZE], line[CF_BUFSIZE], *sp;
int print = false, i;
FILE *pp;
if ((CFSTARTTIME = time((time_t *) NULL)) == -1)
{
Log(LOG_LEVEL_ERR, "Couldn't read system clock. (time: %s)", GetErrorStr());
}
if (strlen(CFRUNCOMMAND) == 0)
{
Log(LOG_LEVEL_VERBOSE, "cf-serverd exec request: no cfruncommand defined");
char sendbuffer[CF_BUFSIZE];
strlcpy(sendbuffer, "Exec request: no cfruncommand defined\n", CF_BUFSIZE);
SendTransaction(&conn->conn_info, sendbuffer, 0, CF_DONE);
return;
}
Log(LOG_LEVEL_VERBOSE, "Examining command string '%s'", args);
for (sp = args; *sp != '\0'; sp++) /* Blank out -K -f */
{
if ((*sp == ';') || (*sp == '&') || (*sp == '|'))
{
char sendbuffer[CF_BUFSIZE];
snprintf(sendbuffer, CF_BUFSIZE, "You are not authorized to activate these classes/roles on host %s\n", VFQNAME);
SendTransaction(&conn->conn_info, sendbuffer, 0, CF_DONE);
return;
}
if ((OptionFound(args, sp, "-K")) || (OptionFound(args, sp, "-f")))
{
*sp = ' ';
*(sp + 1) = ' ';
}
else if (OptionFound(args, sp, "--no-lock"))
{
for (i = 0; i < strlen("--no-lock"); i++)
{
*(sp + i) = ' ';
}
}
else if (OptionFound(args, sp, "--file"))
{
for (i = 0; i < strlen("--file"); i++)
{
*(sp + i) = ' ';
}
}
else if ((OptionFound(args, sp, "--define")) || (OptionFound(args, sp, "-D")))
{
Log(LOG_LEVEL_VERBOSE, "Attempt to activate a predefined role..");
if (!AuthorizeRoles(ctx, conn, sp))
{
char sendbuffer[CF_BUFSIZE];
snprintf(sendbuffer, CF_BUFSIZE, "You are not authorized to activate these classes/roles on host %s\n", VFQNAME);
SendTransaction(&conn->conn_info, sendbuffer, 0, CF_DONE);
return;
}
}
}
snprintf(ebuff, CF_BUFSIZE, "%s --inform", CFRUNCOMMAND);
if (strlen(ebuff) + strlen(args) + 6 > CF_BUFSIZE)
{
char sendbuffer[CF_BUFSIZE];
snprintf(sendbuffer, CF_BUFSIZE, "Command line too long with args: %s\n", ebuff);
SendTransaction(&conn->conn_info, sendbuffer, 0, CF_DONE);
return;
}
else
{
if ((args != NULL) && (strlen(args) > 0))
{
char sendbuffer[CF_BUFSIZE];
strcat(ebuff, " ");
strncat(ebuff, args, CF_BUFSIZE - strlen(ebuff));
snprintf(sendbuffer, CF_BUFSIZE, "cf-serverd Executing %s\n", ebuff);
SendTransaction(&conn->conn_info, sendbuffer, 0, CF_DONE);
}
}
Log(LOG_LEVEL_INFO, "Executing command %s", ebuff);
if ((pp = cf_popen_sh(ebuff, "r")) == NULL)
{
Log(LOG_LEVEL_ERR, "Couldn't open pipe to command '%s'. (pipe: %s)", ebuff, GetErrorStr());
char sendbuffer[CF_BUFSIZE];
snprintf(sendbuffer, CF_BUFSIZE, "Unable to run %s\n", ebuff);
SendTransaction(&conn->conn_info, sendbuffer, 0, CF_DONE);
return;
}
for (;;)
{
ssize_t res = CfReadLine(line, CF_BUFSIZE, pp);
if (res == 0)
{
break;
}
if (res == -1)
{
fflush(pp); /* FIXME: is it necessary? */
break;
}
print = false;
for (sp = line; *sp != '\0'; sp++)
{
if (!isspace((int) *sp))
{
print = true;
break;
}
}
if (print)
{
char sendbuffer[CF_BUFSIZE];
snprintf(sendbuffer, CF_BUFSIZE, "%s\n", line);
if (SendTransaction(&conn->conn_info, sendbuffer, 0, CF_DONE) == -1)
{
Log(LOG_LEVEL_ERR, "Sending failed, aborting. (send: %s)", GetErrorStr());
break;
}
}
}
cf_pclose(pp);
}
bool GetExecOutput(const char *command, char *buffer, bool useshell)
/* Buffer initially contains whole exec string */
{
int offset = 0;
char line[CF_EXPANDSIZE];
FILE *pp;
if (useshell)
{
pp = cf_popen_sh(command, "r");
}
else
{
pp = cf_popen(command, "r", true);
}
if (pp == NULL)
{
Log(LOG_LEVEL_ERR, "Couldn't open pipe to command '%s'. (cf_popen: %s)", command, GetErrorStr());
return false;
}
memset(buffer, 0, CF_EXPANDSIZE);
for (;;)
{
ssize_t res = CfReadLine(line, CF_EXPANDSIZE, pp);
if (res == 0)
{
break;
}
if (res == -1)
{
Log(LOG_LEVEL_ERR, "Unable to read output of command '%s'. (fread: %s)", command, GetErrorStr());
cf_pclose(pp);
return false;
}
if (strlen(line) + offset > CF_EXPANDSIZE - 10)
{
Log(LOG_LEVEL_ERR, "Buffer exceeded %d bytes in exec '%s'", CF_EXPANDSIZE, command);
break;
}
snprintf(buffer + offset, CF_EXPANDSIZE, "%s\n", line);
offset += strlen(line) + 1;
}
if (offset > 0)
{
if (Chop(buffer, CF_EXPANDSIZE) == -1)
{
Log(LOG_LEVEL_ERR, "Chop was called on a string that seemed to have no terminator");
}
}
Log(LOG_LEVEL_DEBUG, "GetExecOutput got '%s'", buffer);
cf_pclose(pp);
return true;
}
int GetExecOutput(char *command, char *buffer, int useshell)
/* Buffer initially contains whole exec string */
{
int offset = 0;
char line[CF_EXPANDSIZE], *sp;
FILE *pp;
int flatten_newlines = false;
CfDebug("GetExecOutput(%s,%s) - use shell = %d\n", command, buffer, useshell);
if (useshell)
{
pp = cf_popen_sh(command, "r");
}
else
{
pp = cf_popen(command, "r");
}
if (pp == NULL)
{
CfOut(cf_error, "cf_popen", "Couldn't open pipe to command %s\n", command);
return false;
}
memset(buffer, 0, CF_EXPANDSIZE);
while (!feof(pp))
{
if (ferror(pp)) /* abortable */
{
fflush(pp);
break;
}
CfReadLine(line, CF_EXPANDSIZE, pp);
if (ferror(pp)) /* abortable */
{
fflush(pp);
break;
}
if (flatten_newlines)
{
for (sp = line; *sp != '\0'; sp++)
{
if (*sp == '\n')
{
*sp = ' ';
}
}
}
if (strlen(line) + offset > CF_EXPANDSIZE - 10)
{
CfOut(cf_error, "", "Buffer exceeded %d bytes in exec %s\n", CF_EXPANDSIZE, command);
break;
}
if (flatten_newlines)
{
snprintf(buffer + offset, CF_EXPANDSIZE, "%s ", line);
}
else
{
snprintf(buffer + offset, CF_EXPANDSIZE, "%s\n", line);
}
offset += strlen(line) + 1;
}
if (offset > 0)
{
Chop(buffer);
}
CfDebug("GetExecOutput got: [%s]\n", buffer);
cf_pclose(pp);
return true;
}