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dist.c
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dist.c
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/*
* "$Id: dist.c 843 2010-12-31 02:18:18Z mike $"
*
* Distribution functions for the ESP Package Manager (EPM).
*
* Copyright 1999-2010 by Easy Software Products.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Contents:
*
* add_command() - Add a command to the distribution...
* add_depend() - Add a dependency to the distribution...
* add_description() - Add a description to the distribution.
* add_file() - Add a file to the distribution.
* add_subpackage() - Add a subpackage to the distribution.
* find_subpackage() - Find a subpackage in the distribution.
* free_dist() - Free memory used by a distribution.
* getoption() - Get an option from a file.
* get_platform() - Get the operating system information...
* get_runlevels() - Get the run levels for the specified init script.
* get_start() - Get the start number for an init script.
* get_stop() - Get the stop number for an init script.
* new_dist() - Create a new, empty software distribution.
* read_dist() - Read a software distribution.
* sort_dist_files() - Sort the files in the distribution.
* write_dist() - Write a distribution list file...
* compare_files() - Compare the destination filenames.
* expand_name() - Expand a filename with environment variables.
* get_file() - Read a file into a string...
* get_inline() - Read inline lines into a string...
* get_line() - Get a line from a file, filtering for uname
* lines...
* get_string() - Get a delimited string from a line.
* patmatch() - Pattern matching...
* sort_subpackages() - Compare two subpackage names.
* update_architecture() - Normalize the machine architecture name.
*/
/*
* Include necessary headers...
*/
#include "epm.h"
#include <pwd.h>
/*
* Some versions of Solaris don't define gethostname()...
*/
#ifdef __sun
extern int gethostname(char *, int);
#endif /* __sun */
/*
* Local functions...
*/
static int compare_files(const file_t *f0, const file_t *f1);
static void expand_name(char *buffer, char *name, size_t bufsize, int warn);
static char *get_file(const char *filename, char *buffer, size_t size);
static char *get_inline(const char *term, FILE *fp, char *buffer,
size_t size);
static char *get_line(char *buffer, int size, FILE *fp,
struct utsname *platform, const char *format,
int *skip);
static char *get_string(char **src, char *dst, size_t dstsize);
static int patmatch(const char *, const char *);
static int sort_subpackages(char **a, char **b);
static void update_architecture(char *buffer, size_t bufsize);
/*
* Conditional "skip" bits...
*/
#define SKIP_SYSTEM 1 /* Not the right system */
#define SKIP_FORMAT 2 /* Not the right format */
#define SKIP_ARCH 4 /* Not the right architecture */
#define SKIP_IF 8 /* Set if the current #if was not satisfied */
#define SKIP_IFACTIVE 16 /* Set if we're in an #if */
#define SKIP_IFSAT 32 /* Set if an #if statement has been satisfied */
#define SKIP_MASK 15 /* Bits to look at */
/*
* 'add_command()' - Add a command to the distribution...
*/
void
add_command(dist_t *dist, /* I - Distribution */
FILE *fp, /* I - Distribution file */
int type, /* I - Command type */
const char *command, /* I - Command string */
const char *subpkg, /* I - Subpackage */
const char *section) /* I - Literal text section */
{
command_t *temp; /* New command */
char buf[16384]; /* File import buffer */
if (!strncmp(command, "<<", 2))
{
for (command += 2; isspace(*command & 255); command ++);
command = get_inline(command, fp, buf, sizeof(buf));
}
else if (command[0] == '<' && command[1])
{
for (command ++; isspace(*command & 255); command ++);
command = get_file(command, buf, sizeof(buf));
}
if (!command)
return;
if (dist->num_commands == 0)
temp = malloc(sizeof(command_t));
else
temp = realloc(dist->commands, (dist->num_commands + 1) * sizeof(command_t));
if (!temp)
{
perror("epm: Out of memory allocating a command");
return;
}
dist->commands = temp;
temp += dist->num_commands;
temp->type = type;
temp->command = strdup(command);
if (!temp->command)
{
perror("epm: Out of memory duplicating a command string");
return;
}
temp->subpackage = subpkg;
if (section && *section)
{
temp->section = strdup(section);
if (!temp->section)
{
perror("epm: Out of memory duplicating a literal section");
free(temp->command);
return;
}
}
else
temp->section = NULL;
dist->num_commands ++;
}
/*
* 'add_depend()' - Add a dependency to the distribution...
*/
void
add_depend(dist_t *dist, /* I - Distribution */
int type, /* I - Type of dependency */
const char *line, /* I - Line from file */
const char *subpkg) /* I - Subpackage */
{
int i; /* Looping var */
depend_t *temp; /* New dependency */
char *ptr; /* Pointer into string */
const char *lineptr; /* Temporary pointer into line */
/*
* Allocate memory for the dependency...
*/
if (dist->num_depends == 0)
temp = malloc(sizeof(depend_t));
else
temp = realloc(dist->depends, (dist->num_depends + 1) * sizeof(depend_t));
if (temp == NULL)
{
perror("epm: Out of memory allocating a dependency");
return;
}
dist->depends = temp;
temp += dist->num_depends;
dist->num_depends ++;
/*
* Initialize the dependency record...
*/
memset(temp, 0, sizeof(depend_t));
temp->type = type;
temp->subpackage = subpkg;
/*
* Get the product name string...
*/
for (ptr = temp->product; *line && !isspace(*line & 255); line ++)
if (ptr < (temp->product + sizeof(temp->product) - 1))
*ptr++ = *line;
while (isspace(*line & 255))
line ++;
/*
* Get the version strings, if any...
*/
for (i = 0; *line && i < 2; i ++)
{
/*
* Handle <version, >version, etc.
*/
if (!isalnum(*line & 255))
{
if (*line == '<' && i == 0)
{
strcpy(temp->version[0], "0.0");
i ++;
}
while (!isdigit(*line & 255) && *line)
line ++;
}
if (!*line)
break;
/*
* Grab the version string...
*/
for (ptr = temp->version[i]; *line && !isspace(*line & 255); line ++)
if (ptr < (temp->version[i] + sizeof(temp->version[i]) - 1))
*ptr++ = *line;
while (isspace(*line & 255))
line ++;
/*
* Get the version number, if any...
*/
for (lineptr = line; isdigit(*lineptr & 255); lineptr ++);
if (!*line || (!isspace(*lineptr & 255) && *lineptr))
{
/*
* No version number specified, or the next number is a version
* string...
*/
temp->vernumber[i] = get_vernumber(temp->version[i]);
}
else
{
/*
* Grab the version number directly from the line...
*/
temp->vernumber[i] = atoi(line);
for (line = lineptr; isspace(*line & 255); line ++);
}
}
/*
* Handle assigning default values based on the number of version numbers...
*/
switch (i)
{
case 0 :
strcpy(temp->version[0], "0.0");
/* fall through to set max version number */
case 1 :
strcpy(temp->version[1], "999.99.99p99");
temp->vernumber[1] = INT_MAX;
break;
}
}
/*
* get all tags for rpm
* */
void
add_tags(dist_t *dist, /* I - Distribution */
FILE *fp, /* I - Source file */
const char *tag, /* I - Tags string */
const char *subpkg) /* I - Subpackage name */
{
tag_t *temp; /* Temporary tags array */
if (tag== NULL)
return;
if (dist->num_tags== 0)
temp = malloc(sizeof(tag_t));
else
temp = realloc(dist->tags,
(dist->num_tags+ 1) * sizeof(tag_t));
if (temp == NULL)
{
perror("epm: Out of memory adding description");
return;
}
dist->tags= temp;
temp += dist->num_tags;
dist->num_tags++;
temp->subpackage = subpkg;
if ((temp->tag= strdup(tag)) == NULL)
perror("epm: Out of memory duplicating description");
}
/*
* 'add_description()' - Add a description to the distribution.
*/
void
add_description(dist_t *dist, /* I - Distribution */
FILE *fp, /* I - Source file */
const char *description,/* I - Description string */
const char *subpkg) /* I - Subpackage name */
{
description_t *temp; /* Temporary description array */
char buf[16384]; /* File import buffer */
if (!strncmp(description, "<<", 2))
{
for (description += 2; isspace(*description & 255); description ++);
description = get_inline(description, fp, buf, sizeof(buf));
}
else if (description[0] == '<' && description[1])
{
for (description ++; isspace(*description & 255); description ++);
description = get_file(description, buf, sizeof(buf));
}
if (description == NULL)
return;
if (dist->num_descriptions == 0)
temp = malloc(sizeof(description_t));
else
temp = realloc(dist->descriptions,
(dist->num_descriptions + 1) * sizeof(description_t));
if (temp == NULL)
{
perror("epm: Out of memory adding description");
return;
}
dist->descriptions = temp;
temp += dist->num_descriptions;
dist->num_descriptions ++;
temp->subpackage = subpkg;
if ((temp->description = strdup(description)) == NULL)
perror("epm: Out of memory duplicating description");
}
/*
* 'add_file()' - Add a file to the distribution.
*/
file_t * /* O - New file */
add_file(dist_t *dist, /* I - Distribution */
const char *subpkg) /* I - Subpackage name */
{
file_t *file; /* New file */
if (dist->num_files == 0)
dist->files = (file_t *)malloc(sizeof(file_t));
else
dist->files = (file_t *)realloc(dist->files, sizeof(file_t) *
(dist->num_files + 1));
file = dist->files + dist->num_files;
dist->num_files ++;
file->subpackage = subpkg;
return (file);
}
/*
* 'add_subpackage()' - Add a subpackage to the distribution.
*/
char * /* O - Subpackage pointer */
add_subpackage(dist_t *dist, /* I - Distribution */
const char *subpkg) /* I - Subpackage name */
{
char **temp, /* Temporary array pointer */
*s; /* Subpackage pointer */
if (dist->num_subpackages == 0)
temp = malloc(sizeof(char *));
else
temp = realloc(dist->subpackages,
(dist->num_subpackages + 1) * sizeof(char *));
if (temp == NULL)
return (NULL);
dist->subpackages = temp;
temp += dist->num_subpackages;
dist->num_subpackages ++;
*temp = s = strdup(subpkg);
if (dist->num_subpackages > 1)
qsort(dist->subpackages, (size_t)dist->num_subpackages, sizeof(char *),
(int (*)(const void *, const void *))sort_subpackages);
/*
* Return the new string...
*/
return (s);
}
/*
* 'find_subpackage()' - Find a subpackage in the distribution.
*/
char * /* O - Subpackage pointer */
find_subpackage(dist_t *dist, /* I - Distribution */
const char *subpkg) /* I - Subpackage name */
{
char **match; /* Matching subpackage */
if (!subpkg || !*subpkg)
return (NULL);
if (dist->num_subpackages > 0)
match = bsearch(&subpkg, dist->subpackages, (size_t)dist->num_subpackages,
sizeof(char *),
(int (*)(const void *, const void *))sort_subpackages);
else
match = NULL;
if (match != NULL)
return (*match);
else
return (add_subpackage(dist, subpkg));
}
/*
* 'free_dist()' - Free memory used by a distribution.
*/
void
free_dist(dist_t *dist) /* I - Distribution to free */
{
int i; /* Looping var */
if (dist->num_files > 0)
free(dist->files);
for (i = 0; i < dist->num_descriptions; i ++)
free(dist->descriptions[i].description);
if (dist->num_descriptions)
free(dist->descriptions);
for (i = 0; i < dist->num_subpackages; i ++)
free(dist->subpackages[i]);
if (dist->num_subpackages)
free(dist->subpackages);
for (i = 0; i < dist->num_commands; i ++)
{
free(dist->commands[i].command);
if (dist->commands[i].section)
free(dist->commands[i].section);
}
if (dist->num_commands)
free(dist->commands);
if (dist->num_depends)
free(dist->depends);
free(dist);
}
/*
* 'getoption()' - Get an option from a file.
*/
const char * /* O - Value */
get_option(file_t *file, /* I - File */
const char *name, /* I - Name of option */
const char *defval) /* I - Default value of option */
{
char *ptr; /* Pointer to option */
static char option[256]; /* Copy of file option */
/*
* See if the option exists...
*/
snprintf(option, sizeof(option), "%s(", name);
if ((ptr = strstr(file->options, option)) == NULL)
return (defval);
/*
* Yes, copy the value and truncate at the first ")"...
*/
ptr += strlen(option);
strcpy(option, ptr); /* option and file->options are of equal size */
if ((ptr = strchr(option, ')')) != NULL)
{
*ptr = '\0';
return (option);
}
else
return (defval);
}
/*
* 'get_platform()' - Get the operating system information...
*/
void
get_platform(struct utsname *platform) /* O - Platform info */
{
char *temp; /* Temporary pointer */
#ifdef __APPLE__
FILE *fp; /* SystemVersion.plist file */
char line[1024], /* Line from file */
*ptr; /* Pointer into line */
int major, minor; /* Major and minor release numbers */
#endif /* __APPLE__ */
/*
* Get the system identification information...
*/
uname(platform);
#ifdef __APPLE__
/*
* Try to get the OS version number from the SystemVersion.plist file.
* If not present, use the uname() results for Darwin...
*/
if ((fp = fopen("/System/Library/CoreServices/SystemVersion.plist", "r")) != NULL)
{
ptr = NULL;
while (fgets(line, sizeof(line), fp) != NULL)
if ((ptr = strstr(line, "ProductUserVisibleVersion")) != NULL)
break;
else if ((ptr = strstr(line, "ProductVersion")) != NULL)
break;
if (ptr && fgets(line, sizeof(line), fp) != NULL)
{
major = 10;
minor = 2;
if ((ptr = strstr(line, "<string>")) != NULL)
sscanf(ptr + 8, "%d.%d", &major, &minor);
sprintf(platform->release, "%d.%d", major, minor);
}
else
{
/*
* Couldn't find the version number, so assume it is 10.1...
*/
strcpy(platform->release, "10.1");
}
fclose(fp);
strcpy(platform->sysname, "macosx");
}
#endif /* __APPLE__ */
/*
* Adjust the CPU type accordingly...
*/
#ifdef __sgi
strcpy(platform->machine, "mips");
#elif defined(__hpux)
strcpy(platform->machine, "hppa");
#elif defined(_AIX)
strcpy(platform->machine, "powerpc");
#else
update_architecture(platform->machine, sizeof(platform->machine));
#endif /* __sgi */
#ifdef _AIX
/*
* AIX stores the major and minor version numbers separately;
* combine them...
*/
sprintf(platform->release, "%d.%d", atoi(platform->version),
atoi(platform->release));
#else
/*
* Remove any extra junk from the release number - we just want the
* major and minor numbers...
*/
while (!isdigit((int)platform->release[0]) && platform->release[0])
strcpy(platform->release, platform->release + 1);
if (platform->release[0] == '.')
strcpy(platform->release, platform->release + 1);
for (temp = platform->release; *temp && isdigit(*temp & 255); temp ++);
if (*temp == '.')
for (temp ++; *temp && isdigit(*temp & 255); temp ++);
*temp = '\0';
#endif /* _AIX */
/*
* Convert the operating system name to lowercase, and strip out
* hyphens and underscores...
*/
for (temp = platform->sysname; *temp != '\0'; temp ++)
if (*temp == '-' || *temp == '_')
{
strcpy(temp, temp + 1);
temp --;
}
else
*temp = tolower(*temp);
/*
* SunOS 5.x is really Solaris 2.x or Solaris X, and OSF1 is really
* Digital UNIX a.k.a. Compaq Tru64 UNIX...
*/
if (!strcmp(platform->sysname, "sunos") && platform->release[0] >= '5')
{
strcpy(platform->sysname, "solaris");
if (atoi(platform->release + 2) < 7)
platform->release[0] -= 3;
else
{
/*
* Strip 5. from the front of the version number...
*/
for (temp = platform->release; temp[2]; temp ++)
*temp = temp[2];
*temp = '\0';
}
}
else if (!strcmp(platform->sysname, "osf1"))
strcpy(platform->sysname, "tru64"); /* AKA Digital UNIX */
else if (!strcmp(platform->sysname, "irix64"))
strcpy(platform->sysname, "irix"); /* IRIX */
#ifdef DEBUG
printf("sysname = %s\n", platform->sysname);
printf("release = %s\n", platform->release);
printf("machine = %s\n", platform->machine);
#endif /* DEBUG */
}
/*
* 'get_runlevels()' - Get the run levels for the specified init script.
*/
const char * /* O - Run levels */
get_runlevels(file_t *file, /* I - File */
const char *deflevels) /* I - Default run levels */
{
const char *runlevels; /* Pointer to runlevels option */
if ((runlevels = strstr(file->options, "runlevel(")) != NULL)
runlevels += 9;
else if ((runlevels = strstr(file->options, "runlevels(")) != NULL)
runlevels += 10; /* Compatible mis-spelling... */
else
runlevels = deflevels;
return (runlevels);
}
/*
* 'get_start()' - Get the start number for an init script.
*/
int /* O - Start number */
get_start(file_t *file, /* I - File */
int defstart) /* I - Default start number */
{
const char *start; /* Pointer to start option */
if ((start = strstr(file->options, "start(")) != NULL)
return (atoi(start + 6));
else
return (defstart);
}
/*
* 'get_stop()' - Get the stop number for an init script.
*/
int /* O - Start number */
get_stop(file_t *file, /* I - File */
int defstop) /* I - Default stop number */
{
const char *stop; /* Pointer to stop option */
if ((stop = strstr(file->options, "stop(")) != NULL)
return (atoi(stop + 5));
else
return (defstop);
}
/*
* 'new_dist()' - Create a new, empty software distribution.
*/
dist_t * /* O - New distribution */
new_dist(void)
{
/*
* Create a new, blank distribution...
*/
return ((dist_t *)calloc(sizeof(dist_t), 1));
}
/*
* 'read_dist()' - Read a software distribution.
*/
dist_t * /* O - New distribution */
read_dist(const char *filename, /* I - Main distribution list file */
struct utsname *platform, /* I - Platform information */
const char *format) /* I - Format of distribution */
{
FILE *listfiles[10]; /* File lists */
int listlevel; /* Level in file list */
char line[2048], /* Expanded line from list file */
buf[1024]; /* Original line from list file */
int type; /* File type */
char dst[256], /* Destination path */
src[256], /* Source path */
pattern[256], /* Pattern for source files */
user[32], /* User */
group[32], /* Group */
*temp, /* Temporary pointer */
options[256]; /* File options */
mode_t mode; /* File permissions */
int skip; /* 1 = skip files, 0 = archive files */
dist_t *dist; /* Distribution data */
file_t *file; /* Distribution file */
struct stat fileinfo; /* File information */
DIR *dir; /* Directory */
DIRENT *dent; /* Directory entry */
struct passwd *pwd; /* Password entry */
const char *subpkg; /* Subpackage */
/*
* Create a new, blank distribution...
*/
dist = new_dist();
/*
* Open the main list file...
*/
if ((listfiles[0] = fopen(filename, "r")) == NULL)
{
fprintf(stderr, "epm: Unable to open list file \"%s\" -\n %s\n",
filename, strerror(errno));
return (NULL);
}
/*
* Find any product descriptions, etc. in the list file...
*/
if (Verbosity)
puts("Searching for product information...");
skip = 0;
listlevel = 0;
subpkg = NULL;
do
{
while (get_line(buf, sizeof(buf), listfiles[listlevel], platform, format,
&skip) != NULL)
{
/*
* Do variable substitution...
*/
line[0] = buf[0]; /* Don't expand initial $ */
expand_name(line + 1, buf + 1, sizeof(line) - 1,
strncmp(buf, "%if", 3) || strncmp(buf, "%elseif", 7));
/*
* Check line for config stuff...
*/
if (line[0] == '%')
{
/*
* Find whitespace...
*/
for (temp = line; !isspace(*temp & 255) && *temp; temp ++);
for (; isspace(*temp & 255); *temp++ = '\0');
/*
* Process directive...
*/
if (!strcmp(line, "%include"))
{
listlevel ++;
if ((listfiles[listlevel] = fopen(temp, "r")) == NULL)
{
fprintf(stderr, "epm: Unable to include \"%s\" -\n %s\n", temp,
strerror(errno));
listlevel --;
}
}
else if (!strcmp(line, "%description"))
add_description(dist, listfiles[listlevel], temp, subpkg);
else if (!strcmp(line, "%tag"))
add_tags(dist, listfiles[listlevel], temp, subpkg);
else if (!strcmp(line, "%preinstall"))
add_command(dist, listfiles[listlevel], COMMAND_PRE_INSTALL, temp,
subpkg, NULL);
else if (!strcmp(line, "%install") || !strcmp(line, "%postinstall"))
add_command(dist, listfiles[listlevel], COMMAND_POST_INSTALL, temp,
subpkg, NULL);
else if (!strcmp(line, "%remove") || !strcmp(line, "%preremove"))
add_command(dist, listfiles[listlevel], COMMAND_PRE_REMOVE, temp,
subpkg, NULL);
else if (!strcmp(line, "%postremove"))
add_command(dist, listfiles[listlevel], COMMAND_POST_REMOVE, temp,
subpkg, NULL);
else if (!strcmp(line, "%prepatch"))
add_command(dist, listfiles[listlevel], COMMAND_PRE_PATCH, temp,
subpkg, NULL);
else if (!strcmp(line, "%patch") || !strcmp(line, "%postpatch"))
add_command(dist, listfiles[listlevel], COMMAND_POST_PATCH, temp,
subpkg, NULL);
else if (!strncmp(line, "%literal(", 9))
{
char *ptr, /* Pointer to parenthesis */
*section; /* Section for literal text */
section = line + 9;
if ((ptr = strchr(section, ')')) != NULL)
{
*ptr = '\0';
add_command(dist, listfiles[listlevel], COMMAND_LITERAL, temp,
subpkg, section);
}
else
fputs("epm: Ignoring bad %literal(section) line in list file.\n",
stderr);
}
else if (!strcmp(line, "%product"))
{
if (!dist->product[0])
strcpy(dist->product, temp);
else
fputs("epm: Ignoring %product line in list file.\n", stderr);
}
else if (!strcmp(line, "%copyright"))
{
if (!dist->copyright[0])
strcpy(dist->copyright, temp);
else
fputs("epm: Ignoring %copyright line in list file.\n", stderr);
}
else if (!strcmp(line, "%vendor"))
{
if (!dist->vendor[0])
strcpy(dist->vendor, temp);
else
fputs("epm: Ignoring %vendor line in list file.\n", stderr);
}
else if (!strcmp(line, "%packager"))
{
if (!dist->packager[0])
strcpy(dist->packager, temp);
else
fputs("epm: Ignoring %packager line in list file.\n", stderr);
}
else if (!strcmp(line, "%license"))
{
if (!dist->license[0])
strcpy(dist->license, temp);
else
fputs("epm: Ignoring %license line in list file.\n", stderr);
}
else if (!strcmp(line, "%readme"))
{
if (!dist->readme[0])
strcpy(dist->readme, temp);
else
fputs("epm: Ignoring %readme line in list file.\n", stderr);
}
else if (!strcmp(line, "%subpackage"))
{
subpkg = find_subpackage(dist, temp);
}
else if (!strcmp(line, "%version"))
{
if (!dist->version[0])
{
if (strchr(temp, ':'))
{
/*
* Grab the epoch...
*/
dist->epoch = strtol(temp, &temp, 10);
if (*temp == ':')
temp ++;
}
strlcpy(dist->version, temp, sizeof(dist->version));
if ((temp = strchr(dist->version, ' ')) != NULL)
{