diff options
Diffstat (limited to 'contrib/notmuch-deliver/maildrop/maildir/maildircreate.c')
| -rw-r--r-- | contrib/notmuch-deliver/maildrop/maildir/maildircreate.c | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/contrib/notmuch-deliver/maildrop/maildir/maildircreate.c b/contrib/notmuch-deliver/maildrop/maildir/maildircreate.c new file mode 100644 index 0000000..74030f4 --- /dev/null +++ b/contrib/notmuch-deliver/maildrop/maildir/maildircreate.c @@ -0,0 +1,241 @@ +/* +** Copyright 1998 - 2003 Double Precision, Inc. +** See COPYING for distribution information. +*/ + +#include "maildircreate.h" +#include "maildirmisc.h" +#include <sys/types.h> +#if HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif + +#if TIME_WITH_SYS_TIME +#include <sys/time.h> +#include <time.h> +#else +#if HAVE_SYS_TIME_H +#include <sys/time.h> +#else +#include <time.h> +#endif +#endif +#if HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif + +#if HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <string.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include "numlib/numlib.h" + + +static const char rcsid[]="$Id: maildircreate.c,v 1.6 2003/01/26 04:07:03 mrsam Exp $"; + +FILE *maildir_tmpcreate_fp(struct maildir_tmpcreate_info *info) +{ + int fd=maildir_tmpcreate_fd(info); + FILE *fp; + + if (fd < 0) + return NULL; + + fp=fdopen(fd, "w+"); + + if (fp == NULL) + { + close(fd); + return NULL; + } + + return fp; +} + +static int maildir_tmpcreate_fd_do(struct maildir_tmpcreate_info *info); + +#define KEEPTRYING (60 * 60) +#define SLEEPFOR 3 + +int maildir_tmpcreate_fd(struct maildir_tmpcreate_info *info) +{ + int i; + + if (!info->doordie) + return (maildir_tmpcreate_fd_do(info)); + + for (i=0; i<KEEPTRYING / SLEEPFOR; i++) + { + int fd=maildir_tmpcreate_fd_do(info); + + if (fd >= 0 || errno != EAGAIN) + return fd; + + sleep(SLEEPFOR); + } + + return -1; +} + +static int maildir_tmpcreate_fd_do(struct maildir_tmpcreate_info *info) +{ + const char *maildir=info->maildir; + const char *uniq=info->uniq; + const char *hostname=info->hostname; + + char hostname_buf[256]; + char time_buf[NUMBUFSIZE]; + char usec_buf[NUMBUFSIZE]; + char pid_buf[NUMBUFSIZE]; + char len_buf[NUMBUFSIZE+3]; + char dev_buf[NUMBUFSIZE]; + char ino_buf[NUMBUFSIZE]; + struct timeval tv; + + struct stat stat_buf; + int fd; + + if (!maildir) + maildir="."; + if (!uniq) + uniq=""; + + if (!hostname || !*hostname) + { + hostname_buf[sizeof(hostname_buf)-1]=0; + if (gethostname(hostname_buf, sizeof(hostname_buf)-1) < 0) + strcpy(hostname_buf, "localhost"); + hostname=hostname_buf; + } + + gettimeofday(&tv, NULL); + + libmail_str_time_t(tv.tv_sec, time_buf); + libmail_str_time_t(tv.tv_usec, usec_buf); + libmail_str_pid_t(getpid(), pid_buf); + len_buf[0]=0; + if (info->msgsize > 0) + { + strcpy(len_buf, ",S="); + libmail_str_size_t(info->msgsize, len_buf+3); + } + + if (info->tmpname) + free(info->tmpname); + + info->tmpname=malloc(strlen(maildir)+strlen(uniq)+ + strlen(hostname)+strlen(time_buf)+ + strlen(usec_buf)+ + strlen(pid_buf)+strlen(len_buf)+100); + + if (!info->tmpname) + { + maildir_tmpcreate_free(info); + return -1; + } + + strcpy(info->tmpname, maildir); + strcat(info->tmpname, "/tmp/"); + strcat(info->tmpname, time_buf); + strcat(info->tmpname, ".M"); + strcat(info->tmpname, usec_buf); + strcat(info->tmpname, "P"); + strcat(info->tmpname, pid_buf); + + if (*uniq) + strcat(strcat(info->tmpname, "_"), uniq); + strcat(info->tmpname, "."); + strcat(info->tmpname, hostname); + strcat(info->tmpname, len_buf); + + if (stat( info->tmpname, &stat_buf) == 0) + { + maildir_tmpcreate_free(info); + errno=EAGAIN; + return -1; + } + + if (errno != ENOENT) + { + maildir_tmpcreate_free(info); + if (errno == EAGAIN) + errno=EIO; + return -1; + } + + if ((fd=maildir_safeopen_stat(info->tmpname, O_CREAT|O_RDWR|O_TRUNC, + info->openmode, &stat_buf)) < 0) + { + maildir_tmpcreate_free(info); + return -1; + } + + libmail_strh_dev_t(stat_buf.st_dev, dev_buf); + libmail_strh_ino_t(stat_buf.st_ino, ino_buf); + + if (info->newname) + free(info->newname); + + info->newname=malloc(strlen(info->tmpname)+strlen(ino_buf)+ + strlen(dev_buf)+3); + + if (!info->newname) + { + maildir_tmpcreate_free(info); + unlink(info->tmpname); + close(fd); + if (errno == EAGAIN) + errno=EIO; + return -1; + } + + strcpy(info->newname, maildir); + strcat(info->newname, "/new/"); + strcat(info->newname, time_buf); + strcat(info->newname, ".M"); + strcat(info->newname, usec_buf); + strcat(info->newname, "P"); + strcat(info->newname, pid_buf); + strcat(info->newname, "V"); + strcat(info->newname, dev_buf); + strcat(info->newname, "I"); + strcat(info->newname, ino_buf); + if (*uniq) + strcat(strcat(info->newname, "_"), uniq); + strcat(info->newname, "."); + strcat(info->newname, hostname); + strcat(info->newname, len_buf); + + return fd; +} + +void maildir_tmpcreate_free(struct maildir_tmpcreate_info *info) +{ + if (info->tmpname) + free(info->tmpname); + info->tmpname=NULL; + + if (info->newname) + free(info->newname); + info->newname=NULL; +} + +int maildir_movetmpnew(const char *tmpname, const char *newname) +{ + if (link(tmpname, newname) == 0) + { + unlink(tmpname); + return 0; + } + + if (errno != EXDEV) + return -1; + + /* AFS? */ + + return rename(tmpname, newname); +} |