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SUSE:SLE-12-SP3:GA
cronie.13193
cronie-1.4.11-check_user_existence.patch
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File cronie-1.4.11-check_user_existence.patch of Package cronie.13193
From e05fda099a14d2b72cb9e59f36fd22c1e6e75ecd Mon Sep 17 00:00:00 2001 From: Tomas Mraz <tmraz@fedoraproject.org> Date: Tue, 4 Nov 2014 17:53:04 +0100 Subject: [PATCH] Properly check the existence of the user at the time the job is run. And do not ignore jobs for users that were not existing at database reload. --- src/cron.c | 57 +++++++++++++++++++++++---------------------------------- src/entry.c | 27 +++++++++++++-------------- src/env.c | 17 +++++++++++++++++ src/funcs.h | 3 ++- src/job.c | 35 +++++++++++++++++++++++++++++++++++ 5 files changed, 90 insertions(+), 49 deletions(-) diff --git a/src/cron.c b/src/cron.c Index: cronie-1.4.11/src/cron.c =================================================================== --- cronie-1.4.11.orig/src/cron.c +++ cronie-1.4.11/src/cron.c @@ -525,7 +525,6 @@ static void find_jobs(int vtime, cron_db int minute, hour, dom, month, dow; user *u; entry *e; - const char *uname; /* The support for the job-specific timezones is not perfect. There will * be jobs missed or run twice during the DST change in the job timezone. @@ -562,36 +561,30 @@ static void find_jobs(int vtime, cron_db */ for (u = db->head; u != NULL; u = u->next) { for (e = u->crontab; e != NULL; e = e->next) { - Debug(DSCH | DEXT, ("user [%s:%ld:%ld:...] cmd=\"%s\"\n", - e->pwd->pw_name, (long) e->pwd->pw_uid, - (long) e->pwd->pw_gid, e->cmd)); - uname = e->pwd->pw_name; - /* check if user exists in time of job is being run f.e. ldap */ - if (getpwnam(uname) != NULL) { - time_t virtualSecond = (vtime - e->delay) * SECONDS_PER_MINUTE; - time_t virtualGMTSecond = virtualSecond - vGMToff; - job_tz = env_get("CRON_TZ", e->envp); - maketime(job_tz, orig_tz); - /* here we test whether time is NOW */ - if (bit_test(e->minute, minute) && - bit_test(e->hour, hour) && - bit_test(e->month, month) && - (((e->flags & DOM_STAR) || (e->flags & DOW_STAR)) - ? (bit_test(e->dow, dow) && bit_test(e->dom, dom)) + time_t virtualSecond = (vtime - e->delay) * SECONDS_PER_MINUTE; + time_t virtualGMTSecond = virtualSecond - vGMToff; + job_tz = env_get("CRON_TZ", e->envp); + maketime(job_tz, orig_tz); + + /* here we test whether time is NOW */ + if (bit_test(e->minute, minute) && + bit_test(e->hour, hour) && + bit_test(e->month, month) && + (((e->flags & DOM_STAR) || (e->flags & DOW_STAR)) + ? (bit_test(e->dow, dow) && bit_test(e->dom, dom)) : (bit_test(e->dow, dow) || bit_test(e->dom, dom)) - ) - ) { - if (job_tz != NULL && vGMToff != GMToff) - /* do not try to run the jobs from different timezones - * during the DST switch of the default timezone. - */ - continue; + ) + ) { + if (job_tz != NULL && vGMToff != GMToff) + /* do not try to run the jobs from different timezones + * during the DST switch of the default timezone. + */ + continue; - if ((doNonWild && - !(e->flags & (MIN_STAR | HR_STAR))) || - (doWild && (e->flags & (MIN_STAR | HR_STAR)))) - job_add(e, u); /*will add job, if it isn't in queue already for NOW. */ - } + if ((doNonWild && + !(e->flags & (MIN_STAR | HR_STAR))) || + (doWild && (e->flags & (MIN_STAR | HR_STAR)))) + job_add(e, u); /*will add job, if it isn't in queue already for NOW. */ } } } Index: cronie-1.4.11/src/entry.c =================================================================== --- cronie-1.4.11.orig/src/entry.c +++ cronie-1.4.11/src/entry.c @@ -99,6 +99,7 @@ entry *load_entry(FILE * file, void (*er char envstr[MAX_ENVSTR]; char **tenvp; char *p; + struct passwd temppw; Debug(DPARS, ("load_entry()...about to eat comments\n")); @@ -291,11 +292,15 @@ entry *load_entry(FILE * file, void (*er pw = getpwnam(username); if (pw == NULL) { - ecode = e_username; - goto eof; - } - Debug(DPARS, ("load_entry()...uid %ld, gid %ld\n", + Debug(DPARS, ("load_entry()...unknown user entry\n")); + memset(&temppw, 0, sizeof (temppw)); + temppw.pw_name = username; + temppw.pw_passwd = ""; + pw = &temppw; + } else { + Debug(DPARS, ("load_entry()...uid %ld, gid %ld\n", (long) pw->pw_uid, (long) pw->pw_gid)); + } } if ((e->pwd = pw_dup(pw)) == NULL) { @@ -336,17 +341,11 @@ entry *load_entry(FILE * file, void (*er else log_it("CRON", getpid(), "ERROR", "can't set SHELL", 0); } - if (!env_get("HOME", e->envp)) { - if (glue_strings(envstr, sizeof envstr, "HOME", pw->pw_dir, '=')) { - if ((tenvp = env_set(e->envp, envstr)) == NULL) { - ecode = e_memory; - goto eof; - } - e->envp = tenvp; - } - else - log_it("CRON", getpid(), "ERROR", "can't set HOME", 0); + if ((tenvp = env_update_home(e->envp, pw->pw_dir)) == NULL) { + ecode = e_memory; + goto eof; } + e->envp = tenvp; #ifndef LOGIN_CAP /* If login.conf is in used we will get the default PATH later. */ if (ChangePath && !env_get("PATH", e->envp)) { Index: cronie-1.4.11/src/env.c =================================================================== --- cronie-1.4.11.orig/src/env.c +++ cronie-1.4.11/src/env.c @@ -25,6 +25,7 @@ #include <errno.h> #include <stdlib.h> #include <string.h> +#include <sys/types.h> #include <unistd.h> #include "globals.h" @@ -291,3 +292,19 @@ char *env_get(const char *name, char **e } return (NULL); } + +char **env_update_home(char **envp, const char *dir) { + char envstr[MAX_ENVSTR]; + + if (dir == NULL || *dir == '\0' || env_get("HOME", envp)) { + return envp; + } + + if (glue_strings(envstr, sizeof envstr, "HOME", dir, '=')) { + envp = env_set(envp, envstr); + } + else + log_it("CRON", getpid(), "ERROR", "can't set HOME", 0); + + return envp; +} Index: cronie-1.4.11/src/funcs.h =================================================================== --- cronie-1.4.11.orig/src/funcs.h +++ cronie-1.4.11/src/funcs.h @@ -82,7 +82,8 @@ char *env_get(const char *, char **), *first_word(const char *, const char *), **env_init(void), **env_copy(char **), - **env_set(char **, const char *); + **env_set(char **, const char *), + **env_update_home(char **, const char *); user *load_user(int, struct passwd *, const char *, const char *, const char *), *find_user(cron_db *, const char *, const char *); Index: cronie-1.4.11/src/job.c =================================================================== --- cronie-1.4.11.orig/src/job.c +++ cronie-1.4.11/src/job.c @@ -22,6 +22,11 @@ #include "config.h" #include <stdlib.h> +#include <pwd.h> +#include <errno.h> +#include <sys/types.h> +#include <unistd.h> +#include <string.h> #include "funcs.h" #include "globals.h" @@ -36,12 +41,42 @@ static job *jhead = NULL, *jtail = NULL; void job_add(entry * e, user * u) { job *j; + struct passwd *newpwd; + struct passwd *temppwd; + const char *uname; /* if already on queue, keep going */ for (j = jhead; j != NULL; j = j->next) if (j->e == e && j->u == u) return; + uname = e->pwd->pw_name; + /* check if user exists in time of job is being run f.e. ldap */ + if ((temppwd = getpwnam(uname)) != NULL) { + char **tenvp; + + Debug(DSCH | DEXT, ("user [%s:%ld:%ld:...] cmd=\"%s\"\n", + e->pwd->pw_name, (long) temppwd->pw_uid, + (long) temppwd->pw_gid, e->cmd)); + if ((newpwd = pw_dup(temppwd)) == NULL) { + log_it(uname, getpid(), "ERROR", "memory allocation failed", errno); + return; + } + free(e->pwd); + e->pwd = newpwd; + + if ((tenvp = env_update_home(e->envp, e->pwd->pw_dir)) == NULL) { + log_it(uname, getpid(), "ERROR", "memory allocation failed", errno); + return; + } + e->envp = tenvp; + } else { + log_it(uname, getpid(), "ERROR", "getpwnam() failed",errno); + Debug(DSCH | DEXT, ("%s:%d pid=%d time=%ld getpwnam(%s) failed errno=%d error=%s\n", + __FILE__,__LINE__,getpid(),time(NULL),uname,errno,strerror(errno))); + return; + } + /* build a job queue element */ if ((j = (job *) malloc(sizeof (job))) == NULL) return;
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