-
/*
- * whatnow.c -- the nmh `WhatNow' shell
- *
- * $Id$
- */
+** whatnow.c -- the WhatNow shell
+**
+** This code is Copyright (c) 2002, by the authors of nmh. See the
+** COPYRIGHT file in the root directory of the nmh distribution for
+** complete copyright information.
+*/
#include <h/mh.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <h/mime.h>
+#include <h/utils.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <locale.h>
+#include <sysexits.h>
+
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+
+static struct swit switches[] = {
+#define EDITRSW 0
+ { "editor editor", 0 },
+#define PRMPTSW 1
+ { "prompt string", 0 },
+#define VERSIONSW 2
+ { "Version", 0 },
+#define HELPSW 3
+ { "help", 0 },
+ { NULL, 0 }
+};
-/* from whatnowsbr.c */
-int WhatNow (int, char **);
+char *version=VERSION;
+
+/*
+** Options at the "whatnow" prompt
+*/
+static struct swit aleqs[] = {
+#define EDITSW 0
+ { "edit [editor [switches]]", 0 },
+#define LISTSW 1
+ { "list", 0 },
+#define DISPSW 2
+ { "display", 0 },
+#define WHOMSW 3
+ { "whom", 0 },
+#define SENDSW 4
+ { "send", 0 },
+#define REFILEOPT 5
+ { "refile +folder", 0 },
+#define DELETESW 6
+ { "delete", 0 },
+#define QUITSW 7
+ { "quit", 0 },
+#define CDCMDSW 8
+ { "cd [directory]", 0 },
+#define PWDCMDSW 9
+ { "pwd", 0 },
+#define LSCMDSW 10
+ { "ls", 0 },
+#define ALISTCMDSW 11
+ { "alist", 0 },
+#define ATTACHCMDSW 12
+ { "attach files", 0 },
+#define DETACHCMDSW 13
+ { "detach numbers", 0 },
+ { NULL, 0 }
+};
+
+static char *myprompt = "\nWhat now? ";
+
+/*
+** static prototypes
+*/
+static int editfile(char **, char **, char *);
+static int sendfile(char **, char *);
+static int refile(char **, char *);
+static int removefile(char *);
+static void writelscmd(char *, int, char **);
+static void writesomecmd(char *, int, char *, char *, char **);
+static FILE* popen_in_dir(const char *, const char *, const char *);
+static int system_in_dir(const char *, const char *);
int
-main (int argc, char **argv)
+main(int argc, char **argv)
{
-#ifdef LOCALE
- setlocale(LC_ALL, "");
-#endif
- return WhatNow (argc, argv);
+ int use = NOUSE;
+ char *cp;
+ char *ed = NULL, *drft = NULL;
+ char buf[BUFSIZ], prompt[BUFSIZ];
+ char **argp, **arguments;
+ struct stat st;
+ char cwd[MAXPATHLEN + 1]; /* current working directory */
+ char file[MAXPATHLEN + 1]; /* file name buffer */
+ char shell[MAXPATHLEN + 1]; /* shell response buffer */
+ FILE *f; /* read pointer for bgnd proc */
+
+ setlocale(LC_ALL, "");
+ invo_name = mhbasename(argv[0]);
+
+ /* read user profile/context */
+ context_read();
+
+ arguments = getarguments(invo_name, argc, argv, 1);
+ argp = arguments;
+
+ /*
+ ** Get the initial current working directory.
+ */
+
+ if (!getcwd(cwd, sizeof (cwd))) {
+ adios(EX_USAGE, "getcwd", "could not get working directory");
+ }
+
+ while ((cp = *argp++)) {
+ if (*cp == '-') {
+ switch (smatch(++cp, switches)) {
+ case AMBIGSW:
+ ambigsw(cp, switches);
+ exit(EX_USAGE);
+ case UNKWNSW:
+ adios(EX_USAGE, NULL, "-%s unknown", cp);
+
+ case HELPSW:
+ snprintf(buf, sizeof(buf),
+ "%s [switches] [file]",
+ invo_name);
+ print_help(buf, switches, 1);
+ exit(argc == 2 ? EX_OK : EX_USAGE);
+ case VERSIONSW:
+ print_version(invo_name);
+ exit(argc == 2 ? EX_OK : EX_USAGE);
+
+ case EDITRSW:
+ if (!(ed = *argp++) || *ed == '-')
+ adios(EX_USAGE, NULL, "missing argument to %s",
+ argp[-2]);
+ continue;
+
+ case PRMPTSW:
+ if (!(myprompt = *argp++) || *myprompt == '-')
+ adios(EX_USAGE, NULL, "missing argument to %s",
+ argp[-2]);
+ continue;
+
+ }
+ }
+ if (drft)
+ adios(EX_USAGE, NULL, "only one draft at a time!");
+ else
+ drft = cp;
+ }
+
+ if ((!drft && !(drft = getenv("mhdraft"))) || !*drft)
+ drft = mh_xstrdup(m_draft(seq_cur));
+
+ if ((cp = getenv("mhuse")) && *cp)
+ use = atoi(cp);
+
+ if (!ed && !(ed = getenv("mheditor"))) {
+ ed = ""; /* Don't initially edit the draft */
+ }
+
+ /* start editing the draft, unless editor is the empty string */
+ if (*ed) {
+ if (editfile(&ed, NULL, drft) <0) {
+ if (!use) {
+ unlink(drft);
+ }
+ adios(EX_SOFTWARE, NULL, "Try again.");
+ }
+ }
+
+ snprintf(prompt, sizeof(prompt), myprompt, invo_name);
+ while ((argp = getans(prompt, aleqs))) {
+ switch (smatch(*argp, aleqs)) {
+ case DISPSW:
+ /* display the msg being replied to or distributed */
+ if ((cp = getenv("mhaltmsg")) && *cp) {
+ execprogl(listproc, listproc, "-file", cp,
+ (char *)NULL);
+ } else {
+ advise(NULL, "no alternate message to display");
+ }
+ break;
+
+ case EDITSW:
+ /* Call an editor on the draft file */
+ if (*++argp)
+ ed = *argp++;
+ editfile(&ed, argp, drft);
+ break;
+
+ case LISTSW:
+ /* display the draft file */
+ execprogl(listproc, listproc, "-file", drft,
+ (char *)NULL);
+ break;
+
+ case QUITSW:
+ /* quit */
+ if (stat(drft, &st) != NOTOK) {
+ advise(NULL, "draft left on %s", drft);
+ }
+ exit(EX_OK);
+
+ case DELETESW:
+ /* Delete draft and exit */
+ removefile(drft);
+ exit(EX_OK);
+
+ case SENDSW:
+ /* Send draft */
+ sendfile(++argp, drft);
+ break;
+
+ case REFILEOPT:
+ /* Refile the draft */
+ if (refile(++argp, drft) == 0) {
+ exit(EX_OK);
+ }
+ break;
+
+ case CDCMDSW:
+ /*
+ ** Change the working directory for attachments
+ **
+ ** Run the directory through the user's shell
+ ** so that we can take advantage of any syntax
+ ** that the user is accustomed to. Read back
+ ** the absolute path.
+ */
+
+ if (*(argp+1) == NULL) {
+ sprintf(buf, "$SHELL -c \"cd;pwd\"");
+ } else {
+ writesomecmd(buf, BUFSIZ, "cd", "pwd", argp);
+ }
+ if ((f = popen_in_dir(cwd, buf, "r"))) {
+ fgets(cwd, sizeof (cwd), f);
+
+ if (strchr(cwd, '\n'))
+ *strchr(cwd, '\n') = '\0';
+
+ pclose(f);
+ } else {
+ advise("popen", "could not get directory");
+ }
+
+ break;
+
+ case PWDCMDSW:
+ /* Print the working directory for attachments */
+ printf("%s\n", cwd);
+ break;
+
+ case LSCMDSW:
+ /*
+ ** List files in the current attachment working
+ ** directory
+ **
+ ** Use the user's shell so that we can take
+ ** advantage of any syntax that the user is
+ ** accustomed to.
+ */
+ writelscmd(buf, sizeof(buf), argp);
+ system_in_dir(cwd, buf);
+ break;
+
+ case ALISTCMDSW:
+ /*
+ ** List attachments on current draft.
+ */
+ if (execprogl("anno", "anno", "-list", "-comp",
+ attach_hdr, "-number", drft,
+ (char *)NULL) != 0) {
+ advise(NULL, "Could not list attachment headers.");
+ }
+ break;
+
+ case ATTACHCMDSW:
+ /*
+ ** Attach files to current draft.
+ */
+
+ if (*(argp+1) == NULL) {
+ advise(NULL, "attach command requires file argument(s).");
+ break;
+ }
+
+ /*
+ ** Build a command line that causes the user's
+ ** shell to list the file name arguments.
+ ** This handles and wildcard expansion, tilde
+ ** expansion, etc.
+ */
+ writelscmd(buf, sizeof(buf), argp);
+
+ /*
+ ** Read back the response from the shell,
+ ** which contains a number of lines with one
+ ** file name per line. Remove off the newline.
+ ** Determine whether we have an absolute or
+ ** relative path name. Prepend the current
+ ** working directory to relative path names.
+ ** Add the attachment annotation to the draft.
+ */
+ if (!(f = popen_in_dir(cwd, buf, "r"))) {
+ advise("popen", "could not get file from shell");
+ break;
+ }
+
+ while (fgets(shell, sizeof(shell), f)) {
+ *(strchr(shell, '\n')) = '\0';
+
+ if (*shell == '/')
+ sprintf(file, "%s", shell);
+ else {
+ sprintf(file, "%s/%s", cwd, shell);
+ }
+ if (execprogl("anno", "anno",
+ "-nodate", "-append",
+ "-comp", attach_hdr,
+ "-text", file,
+ drft, (char *)NULL) != 0) {
+ advise(NULL, "Could not add attachment header.");
+ }
+ }
+ pclose(f);
+ break;
+
+ case DETACHCMDSW:
+ /*
+ ** Detach files from current draft.
+ **
+ ** Interpret the arguments as
+ ** attachment numbers. Decrement any remaining
+ ** argument number that is greater than the one
+ ** just processed after processing each one so
+ ** that the numbering stays correct.
+ */
+ for (arguments=argp+1; *arguments; arguments++) {
+ int n;
+
+ if (**arguments == '\0') {
+ continue;
+ }
+
+ if (execprogl("anno", "anno", "-delete",
+ "-comp", attach_hdr,
+ "-number", *arguments, drft,
+ (char *)NULL) != 0) {
+ advise(NULL, "Could not delete attachment header.");
+ }
+
+ n = atoi(*arguments);
+ for (argp=arguments+1; *argp; argp++) {
+ if (atoi(*argp) > n) {
+ if (atoi(*argp) == 1) {
+ *argp = "";
+ } else {
+ sprintf(*argp, "%d", atoi(*argp) - 1);
+ }
+ }
+ }
+ }
+ break;
+
+ case WHOMSW:
+ /* list recipients */
+ execprogl("whom", "whom", drft, (char *)NULL);
+ break;
+
+ default:
+ /* Unknown command */
+ advise(NULL, "say what?");
+ break;
+ }
+ }
+
+ exit(EX_IOERR);
+}
+
+
+
+/*
+** Build a command line of the form $SHELL -c "cd 'cwd'; cmd argp ... ;
+** trailcmd".
+*/
+static void
+writesomecmd(char *buf, int bufsz, char *cmd, char *trailcmd, char **argp)
+{
+ char *cp;
+ /*
+ ** Note that we do not quote -- the argp from the user
+ ** is assumed to be quoted as they desire. (We can't treat
+ ** it as pure literal as that would prevent them using ~,
+ ** wildcards, etc.) The buffer produced by this function
+ ** should be given to popen_in_dir() or system_in_dir() so
+ ** that the current working directory is set correctly.
+ */
+ int ln = snprintf(buf, bufsz, "$SHELL -c \"%s", cmd);
+ /*
+ ** NB that some snprintf() return -1 on overflow rather than the
+ ** new C99 mandated 'number of chars that would have been written'
+ */
+ /*
+ ** length checks here and inside the loop allow for the
+ ** trailing ';', trailcmd, '"' and NUL
+ */
+ int trailln = strlen(trailcmd) + 3;
+ if (ln < 0 || ln + trailln > bufsz)
+ adios(EX_USAGE, NULL, "arguments too long");
+
+ cp = buf + ln;
+
+ while (*++argp) {
+ ln = strlen(*argp);
+ /* +1 for leading space */
+ if (ln + trailln + 1 > bufsz - (cp-buf))
+ adios(EX_USAGE, NULL, "arguments too long");
+ *cp++ = ' ';
+ memcpy(cp, *argp, ln+1);
+ cp += ln;
+ }
+ if (*trailcmd) {
+ *cp++ = ';';
+ strcpy(cp, trailcmd);
+ cp += trailln - 3;
+ }
+ *cp++ = '"';
+ *cp = 0;
+}
+
+/*
+** Build a command line that causes the user's shell to list the file name
+** arguments. This handles and wildcard expansion, tilde expansion, etc.
+*/
+static void
+writelscmd(char *buf, int bufsz, char **argp)
+{
+ writesomecmd(buf, bufsz, "ls", "", argp);
+}
+
+/*
+** Like system(), but run the command in directory dir.
+** This assumes the program is single-threaded!
+*/
+static int
+system_in_dir(const char *dir, const char *cmd)
+{
+ char olddir[BUFSIZ];
+ int r;
+ if (getcwd(olddir, sizeof(olddir)) == 0)
+ adios(EX_OSERR, "getcwd", "could not get working directory");
+ if (chdir(dir) != 0)
+ adios(EX_OSERR, "chdir", "could not change working directory");
+ r = system(cmd);
+ if (chdir(olddir) != 0)
+ adios(EX_OSERR, "chdir", "could not change working directory");
+ return r;
+}
+
+/* ditto for popen() */
+static FILE*
+popen_in_dir(const char *dir, const char *cmd, const char *type)
+{
+ char olddir[BUFSIZ];
+ FILE *f;
+ if (getcwd(olddir, sizeof(olddir)) == 0)
+ adios(EX_OSERR, "getcwd", "could not get working directory");
+ if (chdir(dir) != 0)
+ adios(EX_OSERR, "chdir", "could not change working directory");
+ f = popen(cmd, type);
+ if (chdir(olddir) != 0)
+ adios(EX_OSERR, "chdir", "could not change working directory");
+ return f;
+}
+
+
+/*
+** EDIT
+*/
+
+static char *edsave = NULL; /* the editor we used previously */
+
+
+static int
+editfile(char **ed, char **arg, char *file)
+{
+ int pid, status, vecp;
+ char *cp, *vec[MAXARGS];
+
+ if (!*ed || !**ed) {
+ /* We have no explicit editor. */
+ if (edsave) {
+ /* Use the previous editor ... */
+ *ed = edsave;
+ if (!(cp = mhbasename(*ed)))
+ cp = *ed;
+
+ /* but prefer one specified via "editor-next" */
+ cp = concat(cp, "-next", NULL);
+ if ((cp = context_find(cp)))
+ *ed = cp;
+ } else {
+ /* set initial editor */
+ *ed = defaulteditor;
+ }
+ }
+
+ context_save();
+ fflush(stdout);
+
+ switch (pid = fork()) {
+ case NOTOK:
+ advise("fork", "unable to");
+ status = EX_OSERR;
+ break;
+
+ case OK:
+ vecp = 0;
+ vec[vecp++] = mhbasename(*ed);
+ while (arg && *arg) {
+ vec[vecp++] = *arg++;
+ }
+ vec[vecp++] = file;
+ vec[vecp] = NULL;
+
+ execvp(*ed, vec);
+ fprintf(stderr, "%s: unable to exec ", invo_name);
+ perror(*ed);
+ _exit(EX_OSERR);
+
+ default:
+ if ((status = pidwait(pid, NOTOK))) {
+ if ((status & 0xff00) == 0xff00) {
+ /* cmd not found or pidwait() failed */
+ status = EX_SOFTWARE;
+ break;
+ }
+ if (status & 0x00ff) {
+ /* terminated by signal */
+ advise(NULL, "%s terminated by signal %d",
+ *ed, status & 0x7f);
+ } else {
+ /* failure exit */
+ advise(NULL, "%s exited with return code %d",
+ *ed, (status & 0xff00) >> 8);
+ }
+ status = -1;
+ break;
+ }
+ }
+
+ /* remember which editor we used */
+ edsave = mh_xstrdup(*ed);
+
+ *ed = NULL;
+
+ return status;
+}
+
+
+/*
+** SEND
+*/
+
+static int
+sendfile(char **arg, char *file)
+{
+ int vecp = 0;
+ char *vec[MAXARGS];
+
+ context_save();
+ fflush(stdout);
+
+ vec[vecp++] = "send";
+ while (arg && *arg) {
+ vec[vecp++] = *arg++;
+ }
+ vec[vecp++] = file;
+ vec[vecp] = NULL;
+ execvp(*vec, vec);
+ fprintf(stderr, "%s: unable to exec ", invo_name);
+ perror("send");
+ _exit(EX_OSERR);
+}
+
+
+/*
+** refile msg into another folder
+*/
+static int
+refile(char **arg, char *file)
+{
+ int vecp = 0;
+ char *vec[MAXARGS];
+
+ vec[vecp++] = "refile";
+ vec[vecp++] = "-nolink"; /* override bad .mh_profile defaults */
+ vec[vecp++] = "-file";
+ vec[vecp++] = file;
+
+ while (arg && *arg) {
+ vec[vecp++] = *arg++;
+ }
+ vec[vecp] = NULL;
+
+ context_save();
+ fflush(stdout);
+
+ return execprog(*vec, vec);
+}
+
+
+/*
+** Remove the draft file
+*/
+
+static int
+removefile(char *drft)
+{
+ if (unlink(drft) == NOTOK)
+ adios(EX_IOERR, drft, "unable to unlink");
+
+ return OK;
}
projects / mmh / blobdiff