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journal: move journal_field_valid() to journal_file.c
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@ -24,7 +24,7 @@
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#include "hexdecoct.h"
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#include "io-util.h"
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#include "ioprio.h"
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#include "journal-util.h"
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#include "journal-file.h"
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#include "mountpoint-util.h"
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#include "namespace.h"
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#include "parse-util.h"
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@ -38,7 +38,7 @@
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#include "io-util.h"
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#include "ioprio.h"
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#include "ip-protocol-list.h"
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#include "journal-util.h"
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#include "journal-file.h"
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#include "limits-util.h"
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#include "load-fragment.h"
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#include "log.h"
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@ -1521,6 +1521,44 @@ int journal_file_find_data_object(
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ret, ret_offset);
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}
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bool journal_field_valid(const char *p, size_t l, bool allow_protected) {
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const char *a;
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/* We kinda enforce POSIX syntax recommendations for
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environment variables here, but make a couple of additional
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requirements.
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http://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap08.html */
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if (l == (size_t) -1)
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l = strlen(p);
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/* No empty field names */
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if (l <= 0)
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return false;
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/* Don't allow names longer than 64 chars */
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if (l > 64)
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return false;
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/* Variables starting with an underscore are protected */
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if (!allow_protected && p[0] == '_')
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return false;
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/* Don't allow digits as first character */
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if (p[0] >= '0' && p[0] <= '9')
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return false;
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/* Only allow A-Z0-9 and '_' */
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for (a = p; a < p + l; a++)
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if ((*a < 'A' || *a > 'Z') &&
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(*a < '0' || *a > '9') &&
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*a != '_')
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return false;
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return true;
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}
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static int journal_file_append_field(
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JournalFile *f,
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const void *field, uint64_t size,
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@ -271,3 +271,5 @@ static inline bool JOURNAL_FILE_COMPRESS(JournalFile *f) {
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}
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uint64_t journal_file_hash_data(JournalFile *f, const void *data, size_t sz);
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bool journal_field_valid(const char *p, size_t l, bool allow_protected);
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@ -137,41 +137,3 @@ int journal_access_check_and_warn(sd_journal *j, bool quiet, bool want_other_use
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return r;
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}
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bool journal_field_valid(const char *p, size_t l, bool allow_protected) {
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const char *a;
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/* We kinda enforce POSIX syntax recommendations for
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environment variables here, but make a couple of additional
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requirements.
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http://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap08.html */
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if (l == (size_t) -1)
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l = strlen(p);
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/* No empty field names */
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if (l <= 0)
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return false;
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/* Don't allow names longer than 64 chars */
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if (l > 64)
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return false;
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/* Variables starting with an underscore are protected */
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if (!allow_protected && p[0] == '_')
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return false;
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/* Don't allow digits as first character */
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if (p[0] >= '0' && p[0] <= '9')
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return false;
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/* Only allow A-Z0-9 and '_' */
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for (a = p; a < p + l; a++)
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if ((*a < 'A' || *a > 'Z') &&
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(*a < '0' || *a > '9') &&
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*a != '_')
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return false;
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return true;
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}
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@ -6,6 +6,5 @@
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#include "sd-journal.h"
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bool journal_field_valid(const char *p, size_t l, bool allow_protected);
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int journal_access_blocked(sd_journal *j);
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int journal_access_check_and_warn(sd_journal *j, bool quiet, bool want_other_users);
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@ -16,7 +16,7 @@
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#include "hexdecoct.h"
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#include "hostname-util.h"
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#include "in-addr-util.h"
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#include "journal-util.h"
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#include "journal-file.h"
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#include "list.h"
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#include "locale-util.h"
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#include "memory-util.h"
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