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ntp: check name and return status from NSR_AddSourceByName()

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Return an error status when the name is not printable or contains a
space (don't bother with full hostname validation). If the name is an
address, return the same status as NSR_AddSource(). Otherwise, return a
"not resolved yet" status.
This commit is contained in:
Miroslav Lichvar
2019-12-12 11:58:18 +01:00
parent 2ae008bcee
commit 3763befd62
3 changed files with 22 additions and 6 deletions
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10
ntp_sources.h
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@@ -44,7 +44,9 @@ typedef enum {
NSR_NoSuchSource, /* Remove - attempt to remove a source that is not known */
NSR_AlreadyInUse, /* AddSource - attempt to add a source that is already known */
NSR_TooManySources, /* AddSource - too many sources already present */
NSR_InvalidAF /* AddSource - attempt to add a source with invalid address family */
NSR_InvalidAF, /* AddSource - attempt to add a source with invalid address family */
NSR_InvalidName, /* AddSourceByName - attempt to add a source with invalid name */
NSR_UnresolvedName, /* AddSourceByName - name will be resolved later */
} NSR_Status;
/* Procedure to add a new server or peer source. */
@@ -52,8 +54,10 @@ extern NSR_Status NSR_AddSource(NTP_Remote_Address *remote_addr, NTP_Source_Type
/* Procedure to add a new server, peer source, or pool of servers specified by
name instead of address. The name is resolved in exponentially increasing
intervals until it succeeds or fails with a non-temporary error. */
extern void NSR_AddSourceByName(char *name, int port, int pool, NTP_Source_Type type, SourceParameters *params);
intervals until it succeeds or fails with a non-temporary error. If the
name is an address, it is equivalent to NSR_AddSource(). */
extern NSR_Status NSR_AddSourceByName(char *name, int port, int pool, NTP_Source_Type type,
SourceParameters *params);
/* Function type for handlers to be called back when an attempt
* (possibly unsuccessful) to resolve unresolved sources ends */