Re: More librpm queries

[Jeff Johnson <n3npq jbj gmail com>]

On Oct 19, 2006, at 3:55 PM, R. Tyler Ballance wrote:

> Howdy again, I've been searching through some doxygen documentation  
> trying to figure out how to query the rpm db to find the vendor of  
> specific packages?
>
> I'm already extracting the header information (NEVRA) and I wanted  
> to fish out the vendor of these packages as well (in most cases,  
> the vendor is red hat, but there's some Novell packages and other  
> third party vendors whose names we'd like to grab from the  
> installed rpm db)

The vendor tag is RPMTAG_VENDOR.

From the rpm CLI, you want
	rpm -qa --qf '%{name}-%{version}-%{release}.%{arch}: %{vendor}\n'

From C, you want to use headerGetEntry():
	const char * vendor = NULL;

	xx = headerGetEntry(h, RPMTAG_VENDOR, NULL, (void **)&vendor, NULL);

Be prepared for missing and erroneous data, the vendor tag contents  
depends on how
a package was built.

73 de Jeff