mirror of
https://github.com/postgres/postgres.git
synced 2025-12-15 02:22:24 +03:00
psql cleanup
This commit is contained in:
Bruce Momjian
@@ -14,7 +14,7 @@
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#include <signal.h>
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#include <assert.h>
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#ifndef WIN32
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#include <unistd.h> /* for write() */
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#include <unistd.h> /* for write() */
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#endif
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#include <libpq-fe.h>
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@@ -39,19 +39,23 @@
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* "Safe" wrapper around strdup()
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* (Using this also avoids writing #ifdef HAVE_STRDUP in every file :)
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*/
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char * xstrdup(const char * string)
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char *
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xstrdup(const char *string)
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{
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char * tmp;
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if (!string) {
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fprintf(stderr, "xstrdup: Cannot duplicate null pointer.\n");
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exit(EXIT_FAILURE);
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}
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tmp = strdup(string);
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if (!tmp) {
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perror("strdup");
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exit(EXIT_FAILURE);
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}
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return tmp;
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char *tmp;
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if (!string)
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{
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fprintf(stderr, "xstrdup: Cannot duplicate null pointer.\n");
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exit(EXIT_FAILURE);
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}
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tmp = strdup(string);
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if (!tmp)
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{
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perror("strdup");
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exit(EXIT_FAILURE);
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}
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return tmp;
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}
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@@ -67,66 +71,67 @@ char * xstrdup(const char * string)
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bool
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setQFout(const char *fname, PsqlSettings *pset)
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{
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bool status = true;
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bool status = true;
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#ifdef USE_ASSERT_CHECKING
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assert(pset);
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assert(pset);
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#else
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if (!pset) return false;
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if (!pset)
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return false;
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#endif
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/* Close old file/pipe */
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if (pset->queryFout && pset->queryFout != stdout && pset->queryFout != stderr)
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{
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if (pset->queryFoutPipe)
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pclose(pset->queryFout);
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/* Close old file/pipe */
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if (pset->queryFout && pset->queryFout != stdout && pset->queryFout != stderr)
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{
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if (pset->queryFoutPipe)
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pclose(pset->queryFout);
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else
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fclose(pset->queryFout);
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}
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/* If no filename, set stdout */
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if (!fname || fname[0] == '\0')
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{
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pset->queryFout = stdout;
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pset->queryFoutPipe = false;
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}
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else if (*fname == '|')
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{
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const char *pipename = fname + 1;
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#ifndef __CYGWIN32__
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pset->queryFout = popen(pipename, "w");
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#else
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pset->queryFout = popen(pipename, "wb");
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#endif
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pset->queryFoutPipe = true;
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}
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else
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fclose(pset->queryFout);
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}
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/* If no filename, set stdout */
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if (!fname || fname[0]=='\0')
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{
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pset->queryFout = stdout;
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pset->queryFoutPipe = false;
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}
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else if (*fname == '|')
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{
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const char * pipename = fname+1;
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{
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#ifndef __CYGWIN32__
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pset->queryFout = popen(pipename, "w");
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pset->queryFout = fopen(fname, "w");
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#else
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pset->queryFout = popen(pipename, "wb");
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pset->queryFout = fopen(fname, "wb");
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#endif
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pset->queryFoutPipe = true;
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}
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else
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{
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#ifndef __CYGWIN32__
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pset->queryFout = fopen(fname, "w");
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#else
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pset->queryFout = fopen(fname, "wb");
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#endif
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pset->queryFoutPipe = false;
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}
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pset->queryFoutPipe = false;
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}
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if (!pset->queryFout)
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{
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perror(fname);
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pset->queryFout = stdout;
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pset->queryFoutPipe = false;
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status = false;
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}
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if (!pset->queryFout)
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{
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perror(fname);
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pset->queryFout = stdout;
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pset->queryFoutPipe = false;
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status = false;
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}
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/* Direct signals */
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if (pset->queryFoutPipe)
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pqsignal(SIGPIPE, SIG_IGN);
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else
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pqsignal(SIGPIPE, SIG_DFL);
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/* Direct signals */
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if (pset->queryFoutPipe)
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pqsignal(SIGPIPE, SIG_IGN);
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else
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pqsignal(SIGPIPE, SIG_DFL);
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return status;
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return status;
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}
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@@ -137,60 +142,67 @@ setQFout(const char *fname, PsqlSettings *pset)
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* Generalized function especially intended for reading in usernames and
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* password interactively. Reads from stdin.
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*
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* prompt: The prompt to print
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* maxlen: How many characters to accept
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* echo: Set to false if you want to hide what is entered (for passwords)
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* prompt: The prompt to print
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* maxlen: How many characters to accept
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* echo: Set to false if you want to hide what is entered (for passwords)
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*
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* Returns a malloc()'ed string with the input (w/o trailing newline).
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*/
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char *
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simple_prompt(const char *prompt, int maxlen, bool echo)
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{
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int length;
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char * destination;
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int length;
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char *destination;
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#ifdef HAVE_TERMIOS_H
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struct termios t_orig, t;
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struct termios t_orig,
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t;
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#endif
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destination = (char *) malloc(maxlen+2);
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if (!destination)
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return NULL;
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if (prompt) fputs(prompt, stdout);
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destination = (char *) malloc(maxlen + 2);
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if (!destination)
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return NULL;
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if (prompt)
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fputs(prompt, stdout);
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#ifdef HAVE_TERMIOS_H
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if (!echo)
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{
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tcgetattr(0, &t);
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t_orig = t;
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t.c_lflag &= ~ECHO;
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tcsetattr(0, TCSADRAIN, &t);
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}
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if (!echo)
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{
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tcgetattr(0, &t);
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t_orig = t;
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t.c_lflag &= ~ECHO;
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tcsetattr(0, TCSADRAIN, &t);
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}
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#endif
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fgets(destination, maxlen, stdin);
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fgets(destination, maxlen, stdin);
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#ifdef HAVE_TERMIOS_H
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if (!echo) {
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tcsetattr(0, TCSADRAIN, &t_orig);
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puts("");
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}
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if (!echo)
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{
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tcsetattr(0, TCSADRAIN, &t_orig);
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puts("");
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}
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#endif
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length = strlen(destination);
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if (length > 0 && destination[length - 1] != '\n') {
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/* eat rest of the line */
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char buf[512];
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do {
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fgets(buf, 512, stdin);
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} while (buf[strlen(buf) - 1] != '\n');
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}
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length = strlen(destination);
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if (length > 0 && destination[length - 1] != '\n')
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{
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/* eat rest of the line */
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char buf[512];
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if (length > 0 && destination[length - 1] == '\n')
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/* remove trailing newline */
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destination[length - 1] = '\0';
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do
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{
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fgets(buf, 512, stdin);
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} while (buf[strlen(buf) - 1] != '\n');
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}
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return destination;
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if (length > 0 && destination[length - 1] == '\n')
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/* remove trailing newline */
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destination[length - 1] = '\0';
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return destination;
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}
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@@ -205,68 +217,79 @@ simple_prompt(const char *prompt, int maxlen, bool echo)
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* immediate consumption.
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*/
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const char *
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interpolate_var(const char * name, PsqlSettings * pset)
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interpolate_var(const char *name, PsqlSettings *pset)
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{
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const char * var;
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const char *var;
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#ifdef USE_ASSERT_CHECKING
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assert(name);
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assert(pset);
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assert(name);
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assert(pset);
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#else
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if (!name || !pset) return NULL;
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if (!name || !pset)
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return NULL;
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#endif
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if (strspn(name, VALID_VARIABLE_CHARS) == strlen(name)) {
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var = GetVariable(pset->vars, name);
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if (var)
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return var;
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else
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return "";
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}
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if (strspn(name, VALID_VARIABLE_CHARS) == strlen(name))
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{
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var = GetVariable(pset->vars, name);
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if (var)
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return var;
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else
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return "";
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}
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/* otherwise return magic variable */
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/* (by convention these should be capitalized (but not all caps), to not be
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shadowed by regular vars or to shadow env vars) */
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if (strcmp(name, "Version")==0)
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return PG_VERSION_STR;
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/* otherwise return magic variable */
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if (strcmp(name, "Database")==0) {
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if (PQdb(pset->db))
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return PQdb(pset->db);
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else
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return "";
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}
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/*
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* (by convention these should be capitalized (but not all caps), to
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* not be shadowed by regular vars or to shadow env vars)
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*/
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if (strcmp(name, "Version") == 0)
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return PG_VERSION_STR;
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if (strcmp(name, "User")==0) {
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if (PQuser(pset->db))
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return PQuser(pset->db);
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else
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return "";
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}
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if (strcmp(name, "Database") == 0)
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{
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if (PQdb(pset->db))
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return PQdb(pset->db);
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else
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return "";
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}
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if (strcmp(name, "Host")==0) {
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if (PQhost(pset->db))
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return PQhost(pset->db);
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else
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return "";
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}
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if (strcmp(name, "User") == 0)
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{
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if (PQuser(pset->db))
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return PQuser(pset->db);
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else
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return "";
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}
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if (strcmp(name, "Port")==0) {
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if (PQport(pset->db))
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return PQport(pset->db);
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else
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return "";
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}
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if (strcmp(name, "Host") == 0)
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{
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if (PQhost(pset->db))
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return PQhost(pset->db);
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else
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return "";
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}
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/* env vars (if env vars are all caps there should be no prob, otherwise
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you're on your own */
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if (strcmp(name, "Port") == 0)
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{
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if (PQport(pset->db))
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return PQport(pset->db);
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else
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return "";
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}
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if ((var = getenv(name)))
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return var;
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/*
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* env vars (if env vars are all caps there should be no prob,
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* otherwise you're on your own
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*/
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return "";
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if ((var = getenv(name)))
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return var;
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return "";
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}
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/*
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@@ -284,7 +307,7 @@ interpolate_var(const char * name, PsqlSettings * pset)
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* at least avoid trusting printf by using the more primitive fputs().
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*/
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PGconn * cancelConn;
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PGconn *cancelConn;
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#ifdef WIN32
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#define safe_write_stderr(String) fputs(s, stderr)
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@@ -296,79 +319,84 @@ PGconn * cancelConn;
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static void
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handle_sigint(SIGNAL_ARGS)
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{
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/* accept signal if no connection */
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if (cancelConn == NULL)
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exit(1);
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/* Try to send cancel request */
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if (PQrequestCancel(cancelConn))
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safe_write_stderr("\nCANCEL request sent\n");
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else {
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safe_write_stderr("\nCould not send cancel request: ");
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safe_write_stderr(PQerrorMessage(cancelConn));
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}
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/* accept signal if no connection */
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if (cancelConn == NULL)
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exit(1);
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/* Try to send cancel request */
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if (PQrequestCancel(cancelConn))
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safe_write_stderr("\nCANCEL request sent\n");
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else
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{
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safe_write_stderr("\nCould not send cancel request: ");
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safe_write_stderr(PQerrorMessage(cancelConn));
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}
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}
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|
||||
|
||||
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||||
/*
|
||||
* PSQLexec
|
||||
/*
|
||||
* PSQLexec
|
||||
*
|
||||
* This is the way to send "backdoor" queries (those not directly entered
|
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* by the user). It is subject to -E (echo_secret) but not -e (echo).
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*/
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PGresult *
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PGresult *
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||||
PSQLexec(PsqlSettings *pset, const char *query)
|
||||
{
|
||||
PGresult *res;
|
||||
const char * var;
|
||||
PGresult *res;
|
||||
const char *var;
|
||||
|
||||
if (!pset->db) {
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||||
fputs("You are not currently connected to a database.\n", stderr);
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return NULL;
|
||||
}
|
||||
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||||
var = GetVariable(pset->vars, "echo_secret");
|
||||
if (var) {
|
||||
printf("********* QUERY *********\n%s\n*************************\n\n", query);
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fflush(stdout);
|
||||
}
|
||||
|
||||
if (var && strcmp(var, "noexec")==0)
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return NULL;
|
||||
|
||||
cancelConn = pset->db;
|
||||
pqsignal(SIGINT, handle_sigint); /* control-C => cancel */
|
||||
|
||||
res = PQexec(pset->db, query);
|
||||
|
||||
pqsignal(SIGINT, SIG_DFL); /* no control-C is back to normal */
|
||||
|
||||
if (PQstatus(pset->db) == CONNECTION_BAD)
|
||||
{
|
||||
fputs("The connection to the server was lost. Attempting reset: ", stderr);
|
||||
PQreset(pset->db);
|
||||
if (PQstatus(pset->db) == CONNECTION_BAD) {
|
||||
fputs("Failed.\n", stderr);
|
||||
PQfinish(pset->db);
|
||||
PQclear(res);
|
||||
pset->db = NULL;
|
||||
return NULL;
|
||||
if (!pset->db)
|
||||
{
|
||||
fputs("You are not currently connected to a database.\n", stderr);
|
||||
return NULL;
|
||||
}
|
||||
else
|
||||
fputs("Succeeded.\n", stderr);
|
||||
}
|
||||
|
||||
if (res && (PQresultStatus(res) == PGRES_COMMAND_OK ||
|
||||
PQresultStatus(res) == PGRES_TUPLES_OK ||
|
||||
PQresultStatus(res) == PGRES_COPY_IN ||
|
||||
PQresultStatus(res) == PGRES_COPY_OUT)
|
||||
)
|
||||
return res;
|
||||
else {
|
||||
fprintf(stderr, "%s", PQerrorMessage(pset->db));
|
||||
PQclear(res);
|
||||
return NULL;
|
||||
}
|
||||
var = GetVariable(pset->vars, "echo_secret");
|
||||
if (var)
|
||||
{
|
||||
printf("********* QUERY *********\n%s\n*************************\n\n", query);
|
||||
fflush(stdout);
|
||||
}
|
||||
|
||||
if (var && strcmp(var, "noexec") == 0)
|
||||
return NULL;
|
||||
|
||||
cancelConn = pset->db;
|
||||
pqsignal(SIGINT, handle_sigint); /* control-C => cancel */
|
||||
|
||||
res = PQexec(pset->db, query);
|
||||
|
||||
pqsignal(SIGINT, SIG_DFL); /* no control-C is back to normal */
|
||||
|
||||
if (PQstatus(pset->db) == CONNECTION_BAD)
|
||||
{
|
||||
fputs("The connection to the server was lost. Attempting reset: ", stderr);
|
||||
PQreset(pset->db);
|
||||
if (PQstatus(pset->db) == CONNECTION_BAD)
|
||||
{
|
||||
fputs("Failed.\n", stderr);
|
||||
PQfinish(pset->db);
|
||||
PQclear(res);
|
||||
pset->db = NULL;
|
||||
return NULL;
|
||||
}
|
||||
else
|
||||
fputs("Succeeded.\n", stderr);
|
||||
}
|
||||
|
||||
if (res && (PQresultStatus(res) == PGRES_COMMAND_OK ||
|
||||
PQresultStatus(res) == PGRES_TUPLES_OK ||
|
||||
PQresultStatus(res) == PGRES_COPY_IN ||
|
||||
PQresultStatus(res) == PGRES_COPY_OUT)
|
||||
)
|
||||
return res;
|
||||
else
|
||||
{
|
||||
fprintf(stderr, "%s", PQerrorMessage(pset->db));
|
||||
PQclear(res);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@@ -388,131 +416,136 @@ PSQLexec(PsqlSettings *pset, const char *query)
|
||||
bool
|
||||
SendQuery(PsqlSettings *pset, const char *query)
|
||||
{
|
||||
bool success = false;
|
||||
PGresult *results;
|
||||
PGnotify *notify;
|
||||
bool success = false;
|
||||
PGresult *results;
|
||||
PGnotify *notify;
|
||||
|
||||
if (!pset->db) {
|
||||
fputs("You are not currently connected to a database.\n", stderr);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (GetVariableBool(pset->vars, "singlestep")) {
|
||||
char buf[3];
|
||||
fprintf(stdout, "***(Single step mode: Verify query)*********************************************\n"
|
||||
"QUERY: %s\n"
|
||||
"***(press return to proceed or enter x and return to cancel)********************\n",
|
||||
query);
|
||||
fflush(stdout);
|
||||
fgets(buf, 3, stdin);
|
||||
if (buf[0]=='x')
|
||||
return false;
|
||||
fflush(stdin);
|
||||
}
|
||||
|
||||
cancelConn = pset->db;
|
||||
pqsignal(SIGINT, handle_sigint);
|
||||
|
||||
results = PQexec(pset->db, query);
|
||||
|
||||
pqsignal(SIGINT, SIG_DFL);
|
||||
|
||||
if (results == NULL)
|
||||
{
|
||||
fputs(PQerrorMessage(pset->db), pset->queryFout);
|
||||
success = false;
|
||||
}
|
||||
else
|
||||
{
|
||||
switch (PQresultStatus(results))
|
||||
if (!pset->db)
|
||||
{
|
||||
case PGRES_TUPLES_OK:
|
||||
if (pset->gfname)
|
||||
{
|
||||
PsqlSettings settings_copy = *pset;
|
||||
fputs("You are not currently connected to a database.\n", stderr);
|
||||
return false;
|
||||
}
|
||||
|
||||
settings_copy.queryFout = stdout;
|
||||
if (!setQFout(pset->gfname, &settings_copy)) {
|
||||
success = false;
|
||||
break;
|
||||
if (GetVariableBool(pset->vars, "singlestep"))
|
||||
{
|
||||
char buf[3];
|
||||
|
||||
fprintf(stdout, "***(Single step mode: Verify query)*********************************************\n"
|
||||
"QUERY: %s\n"
|
||||
"***(press return to proceed or enter x and return to cancel)********************\n",
|
||||
query);
|
||||
fflush(stdout);
|
||||
fgets(buf, 3, stdin);
|
||||
if (buf[0] == 'x')
|
||||
return false;
|
||||
fflush(stdin);
|
||||
}
|
||||
|
||||
cancelConn = pset->db;
|
||||
pqsignal(SIGINT, handle_sigint);
|
||||
|
||||
results = PQexec(pset->db, query);
|
||||
|
||||
pqsignal(SIGINT, SIG_DFL);
|
||||
|
||||
if (results == NULL)
|
||||
{
|
||||
fputs(PQerrorMessage(pset->db), pset->queryFout);
|
||||
success = false;
|
||||
}
|
||||
else
|
||||
{
|
||||
switch (PQresultStatus(results))
|
||||
{
|
||||
case PGRES_TUPLES_OK:
|
||||
if (pset->gfname)
|
||||
{
|
||||
PsqlSettings settings_copy = *pset;
|
||||
|
||||
settings_copy.queryFout = stdout;
|
||||
if (!setQFout(pset->gfname, &settings_copy))
|
||||
{
|
||||
success = false;
|
||||
break;
|
||||
}
|
||||
|
||||
printQuery(results, &settings_copy.popt, settings_copy.queryFout);
|
||||
|
||||
/* close file/pipe */
|
||||
setQFout(NULL, &settings_copy);
|
||||
|
||||
free(pset->gfname);
|
||||
pset->gfname = NULL;
|
||||
|
||||
success = true;
|
||||
break;
|
||||
}
|
||||
else
|
||||
{
|
||||
success = true;
|
||||
printQuery(results, &pset->popt, pset->queryFout);
|
||||
fflush(pset->queryFout);
|
||||
}
|
||||
break;
|
||||
case PGRES_EMPTY_QUERY:
|
||||
success = true;
|
||||
break;
|
||||
case PGRES_COMMAND_OK:
|
||||
success = true;
|
||||
fprintf(pset->queryFout, "%s\n", PQcmdStatus(results));
|
||||
break;
|
||||
|
||||
case PGRES_COPY_OUT:
|
||||
if (pset->cur_cmd_interactive && !GetVariable(pset->vars, "quiet"))
|
||||
puts("Copy command returns:");
|
||||
|
||||
success = handleCopyOut(pset->db, pset->queryFout);
|
||||
break;
|
||||
|
||||
case PGRES_COPY_IN:
|
||||
if (pset->cur_cmd_interactive && !GetVariable(pset->vars, "quiet"))
|
||||
puts("Enter data to be copied followed by a newline.\n"
|
||||
"End with a backslash and a period on a line by itself.");
|
||||
|
||||
success = handleCopyIn(pset->db, pset->cur_cmd_source,
|
||||
pset->cur_cmd_interactive ? get_prompt(pset, PROMPT_COPY) : NULL);
|
||||
break;
|
||||
|
||||
case PGRES_NONFATAL_ERROR:
|
||||
case PGRES_FATAL_ERROR:
|
||||
case PGRES_BAD_RESPONSE:
|
||||
success = false;
|
||||
fputs(PQerrorMessage(pset->db), pset->queryFout);
|
||||
break;
|
||||
}
|
||||
|
||||
printQuery(results, &settings_copy.popt, settings_copy.queryFout);
|
||||
if (PQstatus(pset->db) == CONNECTION_BAD)
|
||||
{
|
||||
fputs("The connection to the server was lost. Attempting reset: ", stderr);
|
||||
PQreset(pset->db);
|
||||
if (PQstatus(pset->db) == CONNECTION_BAD)
|
||||
{
|
||||
fputs("Failed.\n", stderr);
|
||||
PQfinish(pset->db);
|
||||
PQclear(results);
|
||||
pset->db = NULL;
|
||||
return false;
|
||||
}
|
||||
else
|
||||
fputs("Succeeded.\n", stderr);
|
||||
}
|
||||
|
||||
/* close file/pipe */
|
||||
setQFout(NULL, &settings_copy);
|
||||
/* check for asynchronous notification returns */
|
||||
while ((notify = PQnotifies(pset->db)) != NULL)
|
||||
{
|
||||
fprintf(pset->queryFout, "Asynchronous NOTIFY '%s' from backend with pid '%d' received.\n",
|
||||
notify->relname, notify->be_pid);
|
||||
free(notify);
|
||||
}
|
||||
|
||||
free(pset->gfname);
|
||||
pset->gfname = NULL;
|
||||
|
||||
success = true;
|
||||
break;
|
||||
}
|
||||
else
|
||||
{
|
||||
success = true;
|
||||
printQuery(results, &pset->popt, pset->queryFout);
|
||||
fflush(pset->queryFout);
|
||||
}
|
||||
break;
|
||||
case PGRES_EMPTY_QUERY:
|
||||
success = true;
|
||||
break;
|
||||
case PGRES_COMMAND_OK:
|
||||
success = true;
|
||||
fprintf(pset->queryFout, "%s\n", PQcmdStatus(results));
|
||||
break;
|
||||
|
||||
case PGRES_COPY_OUT:
|
||||
if (pset->cur_cmd_interactive && !GetVariable(pset->vars, "quiet"))
|
||||
puts("Copy command returns:");
|
||||
|
||||
success = handleCopyOut(pset->db, pset->queryFout);
|
||||
break;
|
||||
|
||||
case PGRES_COPY_IN:
|
||||
if (pset->cur_cmd_interactive && !GetVariable(pset->vars, "quiet"))
|
||||
puts("Enter data to be copied followed by a newline.\n"
|
||||
"End with a backslash and a period on a line by itself.");
|
||||
|
||||
success = handleCopyIn(pset->db, pset->cur_cmd_source,
|
||||
pset->cur_cmd_interactive ? get_prompt(pset, PROMPT_COPY) : NULL);
|
||||
break;
|
||||
|
||||
case PGRES_NONFATAL_ERROR:
|
||||
case PGRES_FATAL_ERROR:
|
||||
case PGRES_BAD_RESPONSE:
|
||||
success = false;
|
||||
fputs(PQerrorMessage(pset->db), pset->queryFout);
|
||||
break;
|
||||
if (results)
|
||||
PQclear(results);
|
||||
}
|
||||
|
||||
if (PQstatus(pset->db) == CONNECTION_BAD)
|
||||
{
|
||||
fputs("The connection to the server was lost. Attempting reset: ", stderr);
|
||||
PQreset(pset->db);
|
||||
if (PQstatus(pset->db) == CONNECTION_BAD) {
|
||||
fputs("Failed.\n", stderr);
|
||||
PQfinish(pset->db);
|
||||
PQclear(results);
|
||||
pset->db = NULL;
|
||||
return false;
|
||||
}
|
||||
else
|
||||
fputs("Succeeded.\n", stderr);
|
||||
}
|
||||
|
||||
/* check for asynchronous notification returns */
|
||||
while ((notify = PQnotifies(pset->db)) != NULL)
|
||||
{
|
||||
fprintf(pset->queryFout, "Asynchronous NOTIFY '%s' from backend with pid '%d' received.\n",
|
||||
notify->relname, notify->be_pid);
|
||||
free(notify);
|
||||
}
|
||||
|
||||
if (results)
|
||||
PQclear(results);
|
||||
}
|
||||
|
||||
return success;
|
||||
return success;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user