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Overview
| Comment: | Further improvements to the defenses against being invoked without file descriptor 2 being open. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
6dbaa67420c7c732b47a77fb59b0eab0 |
| User & Date: | drh 2015-02-07 21:14:45.202 |
Context
|
2015-02-08
| ||
| 00:22 | Fix formatting issues on the object description in /artifact ... (check-in: ca30907b0e user: drh tags: trunk) | |
|
2015-02-07
| ||
| 21:14 | Further improvements to the defenses against being invoked without file descriptor 2 being open. ... (check-in: 6dbaa67420 user: drh tags: trunk) | |
| 20:40 | Put the output into CGI or inetd mode prior to failing with a "file-descriptor 2 not open" error. ... (check-in: 35ab16bc9e user: drh tags: trunk) | |
Changes
Changes to src/main.c.
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687 688 689 690 691 692 693 |
zNewArgv[1] = "help";
g.argc++;
g.argv = zNewArgv;
}
zCmdName = g.argv[1];
}
#ifndef _WIN32
| > > > > > | > | > | > > | | 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 |
zNewArgv[1] = "help";
g.argc++;
g.argv = zNewArgv;
}
zCmdName = g.argv[1];
}
#ifndef _WIN32
/* There is a bug in stunnel4 in which it sometimes starts up client
** processes without first opening file descriptor 2 (standard error).
** If this happens, and a subsequent open() of a database returns file
** descriptor 2, and then an assert() fires and writes on fd 2, that
** can corrupt the data file. To avoid this problem, make sure open()
** will never return file descriptor 2 or less. */
if( !is_valid_fd(2) ){
int nTry = 0;
int fd = 0;
while( !is_valid_fd(2)
&& (nTry++)<2
&& (fd = open("/dev/null",O_WRONLY))>=0 && fd<2 ){}
if( fd<2 && !is_valid_fd(2) ){
g.cgiOutput = 1;
g.httpOut = stdout;
g.fullHttpReply = !g.isHTTP;
fossil_fatal("file descriptor 2 is not open");
}
}
#endif
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